Is there a balance due? Due you have title? did you make all the payments?
The creditors will continue to sell your debt if you owe money on the loan...who am I kidding, they will continue to sell the debt even if you don't owe them money.
You can dispute the listing and credit bureau must verify with the debt buyer if the information is correct....is the debt valid as to you. You may be waking a sleeping giant or if they can not verify the information, then the bureau-equifax, transUnion, experian-must remove the information permanently.