My car was given back with scratches all over it, ...

My car was given back with scratches all over it, some that went down to the metal. I will never take my car back to Mercedes benz of Bellevue. I've received better service from a gas station garage.
They reluctantly offered to buff out the scratches but all the while saying it's not there fault. Seeing how careless they were, I won't give them the opportunity to do more damage.