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

This number 855-379-4513 called my cell my husbands cell all my children's cells my parents and my in laws saying they were trying to verify information about me because multiple complaints had been filed against me and they needed to locate me that I missed a court appearance and a warrant had been issued for my arrest I contacted my local police department to find out what was going on and they had no idea what I was talking about and verified that no complaints had been filed and there are no warrants in my name and they would not call and tell anyone if there were they would legally obtain my information not contact me or my family meembers especially my minor children and notify them. The local police advised this is a phishing scam and I should report it the the dept of homeland security which I intend to do these people are predators do not give them any information!!!!!

lol ha :)   I guess that truely represents what they call the Shotgun theory  or throw it against the wall and see if any sticks.  I wouldn't even call them back And if they call you,  deny everything and tell them that you have no knowledge of what they are even talking about.  Tell them that you are disputing the alleged debt and Demand written validation of the debt so that your attorney can review it and dispute it via certified mail. If they decline,  they are in violation of the Fair Debt collections act.  I would tell them that their comment that  "you have been offically served"  is comical and beyond stupid. (that's the same threat that the people in the boiler rooms of India and pakistan use.)   They must comply with your request for validation within 5 days.  If they say they don't have to,  or that they already did,  they are lying and definately trying to scam you.  The law requires that they provide this validation to protect the consumer.  No one owes any stranger over the phone, or anyone else,  until the debt is proven.  Otherwise,  everyone would quit their day job and go into the business.

Just received a call on my cell phone asking for me by a name I have used in over 8 years, telling me that they were I missed a court appearance in Chemung, NY.  Haven't lived there in over 8 years either!  Told me they tried to serve me papers at an address that I have never lived.  Then gave me this number 855-379-4513 for the legal department and a case# to reference.  Told me that I have been officially served and hung up.