guys as promised I will update on the developments, the guy brought the car from the dealer and they returned the full amount paid even why? had not yet made the transition to the ownership, I said that they did not even wanted to have confirmation of any tampering, after 15 minutes he had already? the check in hand and a copy of the contract cancelled, I said that they were gi? ready to pay without question and I believe that they knew to be wrong, however ? the finished good both for him and for them, it's a detail that I didn't know ? the car was registered to a car rental and I believe this explains many things, for the rest of the hair? lesson for the future