This number 202-601-28xx   series is being used extensively to scam people on false debts.  Same sort of spiel.  You're gong to be arrested for what amounts to a civil debt.  

Why call reports it as:  

located in Washington, District Of Columbia.
Its exchange 601 is managed by XSPEDIUS MANAGEMENT CO. SWITCH.
The number is currently on switch number WASHDC12DCO (switch is a technical specification for phone hobbyists) .

phoneaddressdirectory.com  reports about six IP addresses connected with this number.

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

Exact same thing happen to me except they found a family member to go through to get to me I was very concerned and called back and was told I would have a warrant for my arrest today because of a loan I had gotten 4 years ago,

You would think they could the police FBI or us marshalls could trace these numbers. Locate them and arrest these scam artist. These numbers are out of Washington DC and land line  numbers. American's at that. I hope they get caught go go prison for 20 year + years. My incident has Ben reported to local law enforcement my state attorneys general office  and FBI. NEVER PAY A DEBT OVER THE PHONE ESPECIALLY IFTHEY CLAIM TO BE AN OFFICER SSergeant FBI agent etc. Its all a scam. Also always ask for a case number more than likely it starts with 2 letter's then numbers. I have  few good friends that are police officers and 2 a us Marshall. Please never pay a debt with a green dot card or money gram ALWAYS ASK FOR PROFF NOT BY E MAIL BUT BY US MAIL. BE CAREFUL

What a horrible experience!

I don't understand why LE lets this type of harassment continue. Isn't impersonating an officer (or trying to intimidate someone by claiming to put out a warrant) against the law? And a criminal charge? Can't the police track these numbers and find out who/where they're registered to? I don't know too much about American law (Canuck here) but you would think there is something local police could do if they're claiming to issue warrants.

I was just about to say that you CANNOT be arrested for outstanding debt - it is a civil matter, and NOT criminal. Glad you knew your rights! If that were the case, think about how many people would be sitting in jail today for an unpaid cellphone bill! (lol)

I wish there was a big red sign somewhere on every bill that said "Even if you don't pay us - we cannot arrest you for debt!" so people are aware of their rights. Sigh. Wishful thinking! ;)

This happened to me a few days ago. Left a message on my phone saying his name was officer Sinclair. Saying i was under investigation. I called the number given. He told me they was putting a warrant out for my arrest. Told me my job was done and was looking up to 20 years in prison. Said I had a loan through cash net and was being arrested for fraud and grand larceny. Said I wouldn't be able to get  job a burger king. Was given 45 min to come up with almost $1700. I was crying and freaking out. But once we hung up I searched the number on the Internet then called the police. I knew I didn't have a loan. But was very frightened with his voice. They called back and hour later but I didn't answer. The next morning they called this time its a woman. Said she was Elizabeth James from law office of warner and associates. Said since I didn't make restitution a warrant was being issued. I asked her why she calling from the same number thought it was fraud crime investigation. She said they all work in same office. I asked for my case number  she you didn't receive documents. I said hell no. But I did contact police and a lawyer. I told her I was heading up to police station to wait for my warrant. She stated I would be waiting a while to file paper work. I told this woman I had all day.also told her someone was lying because officer Sinclair said the warrant will be ready at 9am. The guy known as Sinclair has a strong professional voice. The women not so bright. Be careful this is a scam. YOU CAN NOt  BE ARRESTED FOR A LOAN. ONLY TAXES AND CHILD SUPPORT.
Caller: law office of warner and associates/ fraud crime investigation. 2026183323.  What's funny your guys calls was from a Westbrook with officer Sinclair extension 304. Mine was officer Sinclair ext 304 different number and different company name. Law office of Warner and associates.

I received a call from these people today asking me to verify information regarding a case against me.  I refused to verify any information and let them know that I am aware of how the court system worked.  He then tried giving me the name and number to someone who claimed to be an attorney.  Definitely has fraud written all over it.

I am pretty sure this is a post from someone connected with the illegally operating collection agency.  This company, Westward Associates, has been involved in scamming people since they got fined $250,000 by the Federal Trade Commission for decptive practices related to scamming people into making investments in Vending Machines.  They have now turned to illegal collection practices.

I moved and got my telephone number in 2005.  Since that time, yes for over 8 years, I have received numerous phone calls for somebody that had the number BEFORE I got it.

On 12/13/2013 at 10:50 AM,  I received a call from 202-624-3059.  A male identified himself as "Invesitgator Sinclair" or "St. Clair" of the "Fraud Investiogation Unit" and advised "A major complaint has been filed in my office and I need to take a statement before I decide what to do."  He left Ext, 304.  He left a comlaint number 715715 and said, Return my call immediately."

Let's  see...

(1)  He tried to make me think he was Law Enforcement, but didn't cross the line really with the language, so he is technically not in violation, I guess.  Please note the telepghone area code is in Washington, DC. to make it look more official.
(2)  He is trying to collect a debt that has to be over 8 years old since I have been receiving calls about this person and her debts for that time period, so the statute of limitations has run and it is uncollectable by legal means.

Since I happen to be a real, bona fide, in the flesh,  Police Investigator, the kind with real arrest powers and a real badgem, I wonder if my complaint to the Attorney General will get some action? We shall see...

202-370-1389 is the number they tried calling me from, I had to call the courts because they said the same thing as you only that the Sherrif's office was going to come arrest me.

Westbrook and Associates is a fictitious company engaged in fraudulent activities using debt collector techniques and intimidation tactics to gain access to personal information and financial accounts of individuals....Please contact your state attorney generals office immediately if you are receiving harassing phone calls from them..Please REFRAIN FROM PASSING ANY PERSONAL INFORMATION via phone, email, electronic transfer or United States Postal Service!!

Same phone call as above .. I have never had a payday loan.  Please file charges against me so I can find out where you are and file in court against you !  I am really tired of the calls and telling them to stop calling  add another number to the blocked callers

You are so full of bovine manure your breath stinks.  This is a total scam, and you are just here planting false information and making false statements to facilitate a criminal enterprise.

I suspect this "company" isn't too bright if they have you shilling for them.  Judging from your post, you are an illiterate.

Nice try shill, but not a winner..  back under the bridge in the boiler room with you! The brooms missing you!

Learn English lately??  Me not believe you.  The fraud is you since you do not give a legitimate address for this "wonderful" company.

How about trying that again in fluent English.

Thanks for playing shill, but no prize for you today.

HE IS LEGIT AND I DONT KNOW IF YOU GOT THE LETTER HE HANDLE MY CASE WITH EASE AND THOSE CASES ARE VERY TRUE HE IS NOT A DEBT COLLECTOR HE IS VERY SWEET AND HELP ME NOT GO TO JAIL I DID A BACKGROUND ON HIM AND THE COMPANY IT IS WESTBROOK AND ASSOCIATES AND THEY ARE OWN BY REAL ATTORNEYS AND INVESTIGATORS SO IT IS TRUE SO DONT BASH HIM HE IS REAL HELPFUL .....Kelly NO FRAUD THERE AT ALL

from investigator sinclair with the fraud investigations unit it was a black man saying they were going to file that i tried to fraud the payday loan company i got a payday loan a few years ago that i was unable to pay. he didnt harrass my number but when i asked for written proof of debt he said they would electronically sent it once i paid in full by either debit card or money gram. so he cant send me a letter but he can send it in an email. didnt say what company he works for, i dont know if they are legit or not but im not sending them anything i looked online no one really reported this number but this is my experience