[Biturbos4] s4 damaged at dealer.. advice?

[Aaron LaPointe]

My s4 was in the shop at Fathers and Sons Audi in West Springfield MA this week for some sensor work and possibly blown turbos.  As if I didn't have enough problems, I went to drop off a key at the dealer to find out that the car's passenger side door has a dent, pass sideview mirror is broken off and missing and driver's side mirror is damaged.  Dealer denies having any involvement and says they refuse to cover damage done to the car.  Dilemma is that the tow company says car was perfect when they picked it up and perfect when they dropped it off.  Dealer refuses to even discuss the possibility that it could be their fault.  Audi of America refuses to help saying they must stand behind their dealer.  Any legal eagles have any idea if I have any kind of recourse against the dealer?  Are they responsible for damage done on their property while they are in custody of the car?  Up until now, this has been a great dealer and I'm really disappointed that they are taking such a staunch position on this issue.  I thought we bought Audis, not Yugos... if I had, I would expect to be treated like an asshole.  If anyone has any ideas, I'd really love to hear em.  Thanks.
Aaron LaPointe
01 s4