Vehicle loan or lease — American Credit Acceptance, LLC (DC)

Problem while selling or giving up the vehicle. XXXX agreed to settle my loan for XXXX XXXX, they requested that I receive an appraisal to gauge the amount of what the vehicle is worth. I went to XXXX dealerships and received XXXX online appraisal offers, XXXX additionally requested pictures of the interior and exterior of the vehicle. We agreed to settle account for XXXX, they sent me a settlement agreement which I signed and returned to them. I visit the dealership to sell the vehicle to satisfy the terms of the agreement and close the account, they report to the dealership that I owe XXXX. I called them, they only want me to sell the vehicle to a certain dealership which was not the agreement. The agreement is between me and them to satisfy the financial requirement to close the accoun