Sorry to hear about the trouble you went through. I hate it when shops put the blame on the customer. When I got my LM's, FedEx scratched all four wheels and I never had enough time to spend on making a formal complaint. Stories like these and the sh*tty experiences I have been through as well makes me want to take pictures of everything on my car before I bring it to any shop or BMW dealer. I was thinking of keeping my GoPro on while my car is being serviced at the dealer ever since I went with the blower.
In any case, I'm sorry to hear the crap they put you through and the damage on those precious LM-Rs. On a brighter note, congrats on the FI's though!