They use several 800 numbers to make this same type of call (also 800-926-5781):
First, they say they're from Visa/Mastercard working in conjunction with federal regulations about overcharged fees for credit card processing (big lie). First caller has heavy foreign accent. 2nd caller will be a state-side "referred rep." They're looking up out-of-state small businesses and calling those numbers saying they will offer lower rates on payment processing. It's a ruse to sell "AM Payment" services via Merrick Bank (IF they are actually doing so.. but in researching their reputation online, found many customer complaints). The callers will ask for lots of business and personal identifying information. Very smooth talkers, BEWARE.

They call our business several times a day, when asked what the call is about they are rude and eveade the question. They say they are merchant services and say we are over paying on our merchant account but cannot tell us anything else about our accounts. Total Scam and they are really disrupting our business.

Everyone should call them and start harrassing them like they do us! I did today!

Call 1-800-926-4938 ext 1003 then just punching in random numbers so there voicemail is bombarded with nothing but noise!

Our company is on the do not call list, has been for years.

VISA AND MASTERCARD DO "GIVE OUT" NAMES AND PHONE NUMBERS TO ANYONE DUH!

JERKS call daily and hang up on my business answering machine. Caller I.D. says UNAVAILABLE. Anyone that wastes my time like that goes on my JERK LIST and will never be answered.  It saves a lot of time.  If I don't have time, I let the machine answer.  If I have a bit of time, I unplug the answering machine until they stop ringing.

Just received another call from 800-926-4938, and was asked for the business owner. I replied, "what are we selling this time" - They hung up !

The other number received with same scams 800-794-1404

Do not call registry and/or attorney general in your state should be notified.

My customers are recieving calls from this company stating they are the National Association of Regulators.  However the phone number given has nothing to do with this company.  Appears from the comments above that this is a scam.  Explained this to my customer.  Would like the name of this company so that we can report them to BBB and other agencies.

Received a call from 800-926-4938. Man said he was calling. He first asked for the owner.  When I asked what he was calling regarding, he said he was calling about overcharges on our merchant account.  I asked him what overcharges, and he was calling regarding ovecharges on our Visa and Mastercard transactions and he asked if if I had a credit card machine.  I told him I did not understand, the phone then went dead.

Left me a voice mail two minutes long but did not say anything!

1-800-926-5781 ext 1003 - received a call from 800-926-4938 asking for the same information by a woman named "Alison" ~ she spoke to my business partner and was given the above number to return the call. This is a scam. DO NOT GIVE THEM ANY INFORMATION!! Stated that her company is "Customer First Merchant Service" ~ he called her back and played stupid to see what would happen...I will post the results. Seriously these people need to get a new hobby, we have real businesses to run....

MY STORY IS IDENTICAL TO THIS ONE!!!!!

I received a call stating that we were being over charged by our merchant account and that the government had contracted this review board to contact local businesses whose merchant accounts with Visa & Mastercard were flagged as being overcharged.  This foreign man named "Dave" (without a last name) asked me for information on the September and October Credit Card Merchant Billing Statements.  He said we had been overcharged by more than 1% on our transactions.  He asked me to fax him the statements so that he could forward them to the merchant account holder on our behalf so that in the future we are not overcharged.  As the conversation continued I noticed that the name of the business he was calling from kept changing, even the group he was contracted by.  He originally said he was contracted by the government on behalf of Visa and Mastercard.  Then he said he worked for Visa and Mastercard.  When I asked the actual name of the company he said Corporate Statement Review.  When I told him that I was unable to locate them on Google and asked what city he was located in, he said Dallas.  I looked that up while still on the line with him.  I asked if they were a company contracted by the government on behalf of Visa and Mastercard, why were they not verifiable.  He said he was unsure.  I asked for the number he was calling from and Google searched that.  I informed him that the only thing coming up with his number was complaints about this scam surrounding the number he had called from.  He then hung up in my face.  
I called the company back and simply got--Please enter your extension.  I entered extension 1014, Dave's extension.  He answered.  I told him that we had gotten disconnected and asked him again what the name of the company was that he was with, not who he was contracted by, but the name of the company that I could get business license information for and a BBB review on.  He said he was Corporate Payment Review.  I asked why the name of the business had changed since we spoke approximately 30 minutes earlier.  He stated it was the same company with two different names so that they would not be identifiable by the Merchant Account Processing Centers when they called to get accounts straight for company's such as mine.  
I asked him where he got the information from about our company and he said he had been contracted by Visa and Mastercard and that they had provided him with the information.  I asked what information they provided him with and he said the name of the company and the telephone number.  I stated that that information could be located on any Google search because we are a legitimate business but unfortunately for him his business could not be located.  Therefore because he could not give me any of the information of the company we process our Visa and Mastercard transactions through that he needed to gather more information from company or government that contracted him before he rang our phones in our offices again disturbing our daily work with a scam opportunity that some may fall for but not us.  
I informed him that I would be posting this information on Google and other blog's to inform other consumers of his fraudulent attempts at gaining access to our company financials and he hung up "got disconnected" from me again.

This is a scam--do not give out your company's information.  If they truly are who they say they are, they wouldn't need you to give them the information, they would already have it.

Got a call from "Merchant Services" today.  They told me that we were overcharged on our October and November credit card processing and we were due a credit. I asked what merchant account they were referring to and the lady told me that I only I (the business) knows that number. She wouldn't give me any information to confirm my account.  I told her how funny this call was since I didn't have a credit card machine during those months.  So she asked when we got the machine.  I said, no, I would'nt pass out any information, that if they were legitimate, then they would have my information.

SCAM!

They called again today!!

These F**GOT F****RS, called me on my business cell phone New Years Eve. No offense to f**gots, or f****rs. We all got em. I am just tired of these f****ng constant google ad placement calls and merchant credit card calls. The FTC and FCC needs to dick them up the a** with......... hmm? a cats hairball. multi cats hairballs.fine, burn, and inprison them.

I work for a bank and just had a customer call me about this company. I called them myself and they told me the same junk as you read others saying on the page. DONT release any information to these people they are scamming!

I also just got a call from them.  I was busy and only have paying attention initially and didn't catch the name of the company, but once I started paying attention things didn't seem to add up.  Then they started asking for my account number and for me to fax or email my statements to them.  I explained that was not going to happen and while I would confirm any information they had I was not going to provide any of that information.  She became quite rude, accusing me of refusing to cooperate and that I would be responsible for any overages on my account.  She then hung up on me.  I promptly called my credit card processor and they confirmed that anyone who is legitimate will not be asking for that information.

We JUST received a call from them, and they claim that "your company was overcharged by 1%" and that "he works for the Federal Government", however, they want your information so they can gather a statement and mess with your account. DO NOT GIVE THEM YOUR INFORMATION! THIS IS A MASSIVE SCAM...We just learned this the hard way before reading these posts.

scam......... be careful!!!!!!!!

I received a call stating that we were being over charged by our merchant account and that the government had contracted this review board to contact local businesses whose merchant accounts with Visa & Mastercard were flagged as being overcharged.  This foreign man named "Dave" (without a last name) asked me for information on the September and October Credit Card Merchant Billing Statements.  He said we had been overcharged by more than 1% on our transactions.  He asked me to fax him the statements so that he could forward them to the merchant account holder on our behalf so that in the future we are not overcharged.  As the conversation continued I noticed that the name of the business he was calling from kept changing, even the group he was contracted by.  He originally said he was contracted by the government on behalf of Visa and Mastercard.  Then he said he worked for Visa and Mastercard.  When I asked the actual name of the company he said Corporate Statement Review.  When I told him that I was unable to locate them on Google and asked what city he was located in, he said Dallas.  I looked that up while still on the line with him.  I asked if they were a company contracted by the government on behalf of Visa and Mastercard, why were they not verifiable.  He said he was unsure.  I asked for the number he was calling from and Google searched that.  I informed him that the only thing coming up with his number was complaints about this scam surrounding the number he had called from.  He then hung up in my face.  
I called the company back and simply got--Please enter your extension.  I entered extension 1014, Dave's extension.  He answered.  I told him that we had gotten disconnected and asked him again what the name of the company was that he was with, not who he was contracted by, but the name of the company that I could get business license information for and a BBB review on.  He said he was Corporate Payment Review.  I asked why the name of the business had changed since we spoke approximately 30 minutes earlier.  He stated it was the same company with two different names so that they would not be identifiable by the Merchant Account Processing Centers when they called to get accounts straight for company's such as mine.  
I asked him where he got the information from about our company and he said he had been contracted by Visa and Mastercard and that they had provided him with the information.  I asked what information they provided him with and he said the name of the company and the telephone number.  I stated that that information could be located on any Google search because we are a legitimate business but unfortunately for him his business could not be located.  Therefore because he could not give me any of the information of the company we process our Visa and Mastercard transactions through that he needed to gather more information from company or government that contracted him before he rang our phones in our offices again disturbing our daily work with a scam opportunity that some may fall for but not us.  
I informed him that I would be posting this information on Google and other blog's to inform other consumers of his fraudulent attempts at gaining access to our company financials and he hung up "got disconnected" from me again.

This is a scam--do not give out your company's information.  If they truly are who they say they are, they wouldn't need you to give them the information, they would already have it.

these people called saying we owed 99.00 non compliance fee. Requested statements for aug and oct that I sent them thinking they were our credit card company. I called our company and they said  they did not make calls like that. Why can.t these people be closed down.

Called today. Claims to be XYZ Co. Lol.. that must have been the first thing to pop in their mind. Quite original.
Asked for owner. When I told him we don't take solicitation calls , he denies that it's a solicitation.