Also ask for their licence 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

This person called several family members and harassed them (including my 13yr old nephew) demanding personal information about me. This person also stated that they want to "serve me" and if they can't get information from my family members they threatened to "serve them". Also person was extremely rude and disclosed private and untrue information about me(defamation of character) to family members, Apparently they claim that I owe them money and they will take any and all means (harassing, humiliating and  bullying) me to get this supposed money from me or I will go to jail. What is this anyway??? Whoever this is needs to cease and desist with this harassment and defamation of character towards me. Who are they anyway?

These b*****ds texted me 13 times in less than 5 minutes.  Called and spoke to a very nice lady.  I do owe the debt to Cash In A Wink and told her that I wanted this issue handled before I entered into a payment arrangement.  Less than 5 minutes go by and they auto dial my work number and don't leave a message.  Called back and got a RUDE NASTY B***H who wouldn't help me and said "well the calls will stop once you make an arrangement"  I said that I would NOT enter into a payment arrangement until this issue was addressed and she got ruder with me.  "Have a nice day, sir."  I need to look into making a complaint about harrassing collection attempts.

I RECEIVED A CALL FROM 800-233-6702, 800-239-7312 AND 800-241-7957 EVERY DAMN HOUR. I FOUND OUT TO THAT THIS COMPANY IS NOT LICENSED IN OTHER STATES TO DO PAYDAY LOANS SO DON'T GET ONE FROM THEM.

Cash in a wink

I called the number back and it is Cash in a Wink

I get calls from this number.  When I don't answer, they leave no message.

This number calls several times a day and all there is is static on the line, I also get the same type of calls from 800-241-7957;800-259-1596; 800-687-1785; 800-838-4338.  Very annoying-I am going to change my phone number