The Audi dealer hit and f***k my car!!!

Im relatively new to the forum but i need to discharge my frustration with this therapy group!!. Today i brought my car to the only Audi dealer in my city...first time in service since i installed the new Rieger kit (just about a month with the kit). and they hit the rear bumper with a high sidewalk and broke the bumper!!!

A frind say they did it on purpose because i refused to install the kit with the dealer, but i cant prove nothing!!. The dealer manager himself came to apologize for the stupidity and they promise to take care of the whole thing. I dont know how they will do, because it is broke!. According to them, they can fix the ABS plastic and i will not notice. I expect nothing than perfection. Man, i really want to cry!!. My wife says not to worry that much; because sometimes things happen for a reason, and to trust my baby TT will be just fine.

Has anybody has an experience like this with the dealer??.