ARA Inc. Mark Farmer sent me a letter saying i owe $6,975.16 within 30 days and if i couldnt to please call mark farmer at ext.3402 Villa Park, Illinois

                ARA sent me a letter saying i owe almost 7 thousand dollars, because they are now the legal owners of my credit acceptance corporation account.i can only think of one thing that i ever owed on that came even close to that amount,wich is my car, wich i know for a fact that ive ALREADY PAID OFF !!!!!including interest and any fees,if i hadnt paid it off, i wouldnt have my title for my car, wich i do have. im irritated, i hate theives and con artists,i hope someone can make them pay, im unemployed for crying out loud.