This company claiming to be the legal department of USA Cash Advance will not stop calling my job. They have an automated system designed to tie up all the lines. I have asked them to stop calling. I have requested documentation. I have offered my Human Resoruces division phone number and they are telling me that unless I make a payment on that day the calls will continue.
You and your employer should file complaints with the FTC, FCC and your state's Attorney General. Send a cease and desist/debt validation communication letter - see this template - http://www.creditinfocenter.com/forms/sampleletter9.shtml - to them, sent certified mail/return receipt - so they can't say they didn't receive it.
Per the FDCPA, they are legally bound to mail you a debt validation letter within five days of their first call, which it sounds like they have not done. Don't let them fob you off by saying they sent this documentation already, or they don't have to do so - many scammers or junk debt buyers will use these excuses. If your caller refuses to give you the company name, mailing and physical address, then that's yet another violation of the FDCPA, and you should note this (keep a log of dates and times they call you). It goes without saying, that if they refuse to give their information, and refuse to mail documentation proving you owe the debt to them, then you should NOT pay them. It would also be a good idea to let them know you're recording them every time they call too - that will just add to your ammunition against them.