Disgusting Treatment from Owner after dmanaging my Car

The Owner is a *****. Damaged my cars whole interior, a vehicle I was trying to sell, promised his insurance would fix it and has since ignored every form of contact from me regarding the matter. I have been unable to sell the car, as it is now damaged. All four doors were torn inside, my rear seat too, and the entire interior then grew mould! Absolutely disgusting & dishonest! Avoid at all costs if you value your car!