It sounds like you hit something and your trying to get BMW to cover your car, I see this alot, with certain customers. Its like the guy who gets a free car wash and comes back to complain about his car not being clean enough for free. Bimmers are expensive to maintain, If you can get it covered by BMW warranty more power to you.
PS. There is no such thing is a mint car, maybe a mint commic book or a mint trading card, but a car no.