Mercedes-Benz GL-Class 2007 Problems

Resolving an issue like this is always difficult, it's a case of he says, she says, but who is correct. The dealer says they didn't damage it, you say they did. From what I can determine neither you nor the dealer has any real proof one way of the other. You might try the consumer affairs people in your state, or engage a lawyer to argue your case, or best, contact Mercedes-Benz direct and put your case to them.