I am sorry for the pain and anger that you are going through after investing so much money.
Here is an important lesson for everyone. When ever you face such situation, take out all the floor mats from your car and spread it on your car. I even go to the extend of taking a thick blanket and spread it all over the car. The cost of a new blanket is nothing compared to the damage sustained by the car. Be it anywhere, tell them you'll pay them for a new blanket. And always try to park your car under a tree.
You can leave your car as it is, but it hurts.
Not every denter is a good denter, even at these dealerships. Try to find out one.