Won't stop calling for "pending case". Starts to argue when told not to call

Keep calling saying that there's a charge pending against me and then transferred to me three times. I could tell that these people were fake.

This is a common ploy by criminals masquerading as debt collectors who are attempting to extort money from people by scaring you into believing that you will be criminally charged, go to jail, lose your driver’s license, have wages garnished, be sued, and a variety of other variations on this,  all for an alleged or nonexistent debt.  One of the tricks they use is to call your work place, friends, or relatives repeatedly in an attempt to shame you into paying.  They also use the “process server” ruse who calls and claims he is going to serve you, but then says you could avoid it by calling another number

Federal law (FDCPA) requires them to send you a letter (US MAIL ONLY) within 5 days of their first contact that contains their name, physical address, the creditor’s name, and the amount of the alleged debt.  It also must contains “mini-Miranda” telling you that it is an attempt to collect a debt and that all information will be used for those purposes.  The one other important thing that this letter must also have in it is that you have a right to dispute the debt within 30 days of receipt of the letter and if you do so, all collection activity must be stopped until the debt is verified.
Read up on your rights here, get template letters to send and also make a complaint at this government site: http://www.consumerfinance.gov/

Also file a complaint with your State Attorney General's office.
List of State AG’s offices:  http://consumerfraudreporting.org/stateattorneygenerallist.php

Got a call from these guys last night. First time around it was a woman and i told her that i was recording the call as well and she hung up. Called them back and got some guy. He started saying all my info and so forth and when he got to my ssn i told him he was one number off. He read it again and i replied yep your one number off. He hung up. Im starting to find it fun to mess with these people. And yes it was some debt collection stuff for something i never got nor wanted... Scam scam scam. Dont fall for it. And like above poster said. Ask them for some info to be sent to you only in the usps mail

Definite scam!! Very disrespectful!!!