That totally sucks. I would have thought that a BMW dealership would take better care of the cars under their care but I guess not. Same thing happened when I owned a Ford. The mechanic at the dealership backed my car into a wall (totally destroyed the back bumper, misaligned the back doors and messed up the trunk). Then I found out from the body shop that they just wanted to bondo or just paint over the damage! I guess the name doesn't really matter. I would definitely DEMAND them replace instead of repair and try to find out which body shop they use. Now I'm going to go over my X with a magnifying glass before service and after service.