Received a call from 202-751-2452, from one Max Wilson. He had a very thick foreign accent and was damn right threatening. He told me he would initiate a legal proceeding and I would have to be in court by 10 AM tomorrow with my attorney. He would not give me his number to call back nor would he give me details of the crime. Told me I had 4 Federal cases against me and that the deputy should have already arrested me but they were waiting on a call from these guys to see if I would take care of the payment outside court system. First told me I owed 3800$ and when I told him I will not give accountant/attorneys number until after I speak with them first the number jumped to 28000$.

As for those who think Personally identifiable information does not exist, looks like the crooks have caught on.. they knew my name and that I was not born here. Although they did not know my present immigration status. They presumed I as a citizen and threatened to cancel my passport and my citizenship and deport me back to my "asian" country.

No fun getting these calls and definitely a scam.

Just keep ignoring it.  The websites and phone centers to report these extortion attempts are probably all shut down but you could try the IRS number at 1-800-829-1040

Silly scammers. Don't they know all the IRS offices are closed due to the shutdown?

I did not pay anything, but what should I do next?

I have experienced the same scenario as mentioned above. The phone number was 202-888-0163

I have recieved a call from 202-888-0147. As Jyoti specified above, heard the same message and when i tried to return the call, it did not go..so realized it was fake/fraud call.
Please be aware and do not disclose any iformation.

Got a call from a Office of David Marvin. Threatened me to pay up money or the IRS will file criminal charges. Told him to shut up and reported it to the police.

I got a call from the number 202-379-1376 this morning claiming IRS and told to return call.  I called back, did not go.   This is a fraud.  Do not get involved.

I got a message from the number 202-379-1376 this morning claiming IRS and told to return call.  I called back, did not go.   This is a fraud.  Do not get involved.

You have obviously identified the caller as a scam artist but just to alert others, the IRS never cold calls you about tax issues.  Initial contact is always via USPS with with enough information for you to know they really are trying to contact you.  You will only receive calls from the IRS after you initiate contact with them.

Got a voice message this morning from "tax crime investigation unit of IRS". A few of the words and phrases were incomprehensible. This is how it sounded,

"This message is from tax [had to make it out, sounded more like text] crime investigation unit of IRS. The very second you receive this message, I need you or your ???? attorney of record to return the call. This is office of David Marvin and our number is 202-379-1376. Again the number is 202-379-1376. If you don't returning the call or if I don't hear from your attorney either then the situation unfolds on you [**threat**]. GOOD BYE!!!!!"

Truthfully, first time I heard the msg, I was taken aback and shocked based on the few keywords I could make out. Then I heard the message several times over. Every time I heard it I became clear that person was speaking with a made up tone simply to intimidate.

Checked the reverse lookup for phone number, it came back registered in Washington DC. Surprising how these frauds are able to register these US phone numbers without any trace back and use them to defraud US citizens. Authorities don't do anything. Is it really that difficult to get the contact for entity owning this number?

Against all legitimate advice to not call "real" crime investigation unit without an attorney, since we are absolutely law abiding citizens paying all our dues, I decided to call back the number.

Called the number of David Martinez with only one question in my head, "Mr. Marvin, since you are investigating the issue, can you tell me my name?" I am pretty sure this David Marvin would have had the answer since he only has my number.

Anyway called the number 3-4 times but didn't get any response.

Please beware not to divulge any information to the caller, not even your name. Its highly likely that stolen or data mined phone numbers don't have any other information, unless they hacked/stole your PII (personally identifiable information) from thousands of insecure data systems. :(

Got a call from some Indian lady at home from 202-525-7996. I called back and some guy called Leo Fernandes said he is from Tax Crime Investigation Unit of IRS . and that I was being prosecuted for 4 charges by the IRS which would lead to a lien on my house and car, freezing of my bank accounts and my passport.

Then he says the Restitution department can withdraw the says if I pay $2000 by GREEN DOT card (from a 7-11 or Stop & Shop)

This is a complete fraud as all GREEN DOT card payments are not checked for depositor or who is receiving the money.

Be careful of this fraud.

fraud

I received a call from this early morning today stating that I am in a financial and I need to call them immediately. If this doesn't get resolved the situation will unfold on me. Sounds like a threat to me. So I called them back and there was no answer

I received a call from this number this morning. They gave no information except that it is important I call the number. The accent sounded foreign and he spoke very fast.

Man with an Asian accent left a message for me to call back threatening that I would suffer repercussions if I didn't.

Left message to Clara back.  Said IRS investigation and something would happen if I didn't call. Had accent.

Got a call saing I am in some kind of finatial problema, that I need to call them back.

I also got the call from 202-525-7996 .Guy is crazy .He said me that I owe money to IRS & If I want to settle the account I should pay him $1531 or case will go in court & I insisted me to tell him my attorney contact  in 15 mins or he will send cops to get me . I called IRS & they asked me file a fraud & call 18008290433.

i been getting calls to call back this number. The person says his name is Detective David Brown. He wont give you any detail except that he is from the IRS.

I got call from this number, asking me to pay 2113.22 for IRS fraud i did. I did not recognize any fraud that i did. He asked me to pay via green.dot money pack only, and immediately, otherwise police will come and arrest me right away. His name is Leo Farnandez, he told me.
I called IRS, they said I have no debt to pay at this time, they said they will investigate it.

202 525 7996 IRS criminal devision. Asked to send 410.00 to stop proceeding.

I just got a call from 202-525-7996 saying they were the IRS and saying I was going to be arrested if I didn't pay a large sum of money.  I reported it to the IRS

The Federal Trade Commission (FTC), the nation's consumer protection agency, is warning consumers to be on the alert for scam artists posing as debt collectors. It may be hard to tell the difference between a legitimate debt collector and a fake one. Sometimes a fake collector may even have some of your personal information, like a bank account number. A caller may be a fake debt collector if he:

?is seeking payment on a debt for a loan you do not recognize;
?refuses to give you a mailing address or phone number;
?asks you for personal financial or sensitive information; or
?exerts high pressure to try to scare you into paying, such as threatening to have you arrested or to report you to a law enforcement agency.

If you think that a caller may be a fake debt collector:

?Ask the caller for his name, company, street address, and telephone number. Tell the caller that you refuse to discuss any debt until you get a written "validation notice." The notice must include the amount of the debt, the name of the creditor you owe, and your rights under the federal Fair Debt Collection Practices Act.
If a caller refuses to give you all of this information, do not pay! Paying a fake debt collector will not always make them go away. They may make up another debt to try to get more money from you.?Stop speaking with the caller. If you have the caller's address, send a letter demanding that the caller stop contacting you, and keep a copy for your files. By law, real debt collectors must stop calling you if you ask them to in writing.
?Do not give the caller personal financial or other sensitive information. Never give out or confirm personal financial or other sensitive information like your bank account, credit card, or Social Security number unless you know whom you're dealing with. Scam artists, like fake debt collectors, can use your information to commit identity theft ? charging your existing credit cards, opening new credit card, checking, or savings accounts, writing fraudulent checks, or taking out loans in your name.
?Contact your creditor. If the debt is legitimate ? but you think the collector may not be ? contact your creditor about the calls. Share the information you have about the suspicious calls and find out who, if anyone, the creditor has authorized to collect the debt.
?Report the call. Contact the FTC and your state Attorney General's office with information about suspicious callers. Many states have their own debt collection laws in addition to the federal FDCPA. Your Attorney General's office can help you determine your rights under your state's law.

http://www.consumer.ftc.gov/articles/0258-fake-debt-collectors

called and said I am in default with IRS, that IRS will sue me and come after me.