Originally took car for repairs. Car is insured as classic. I spent $10,576 for repairs. Had problems with car before I left MB lot. Car was kept 2 months. Work done on fuel tank. I smelled gas fumes. I took car back. They returned my car with scratches on exterior and wood grain panel interior. I called GM and sent email. Called Mgr and Service asst. I found mechanics did unnecessary work and provided docs to show work had already been done. They gave me small credit. What can I do about damage done to my car? I have pics before and after. Always take pics of car. Car body and interior is in great condition. This damage will impact the asking price should I want to sale.