BEWARE!!!NCW fraud

As the same with all the other complaints, NCW has been calling me for about 3-4 weeks daily. They have threathen to have me thrown in jail, garnish wages, judgement, etc... They said I owed $800 to Advance America back in 08. I told them if I owed this debt to show me prove, because I am willing to pay anything I owe. They sent me a letter that they typed up saying that I owe this amount. I emailed them back as well as called them to let them know that this is not proof that I owe, I would like a copy of the check, signed contract, or something in that form. They were very very rude to me, hung up in my face, screamed, told me to shut up, etc... I told them I seen this website and I have just some questions and concerns about owing this money. They said, "are you going to listen to a bunch of dead beats like you". I called the title company that they said I owe they said they did not show that I owe them, I called the Regional Manager and he said that several of his customers has the same complaint and a couple of them gave their credit information to them because of the pressure that they were giving them. The ones that did give their acct# they took them for their money. If you get these phone calls and they can not and will not provide proof to you, call the Federal Trade Commission. I called and they said that they could not send you to jail for this and by law they are obligated to show proof of debt.