I pranged my car into the back of an Uber (not deliberately, though there's always that temptation) and the dealership I had mine taken to took 8 working days to even get round to providing an estimate for my insurance, and only did it after I'd complained to the manufacturer's customer service people.
Don't know whether the complaint helped, but they've put me in a petrol C200 AMG coupe that's great fun. Not particularly practical, I'm only getting just over 25mpg (like I said, it's great fun to drive!), and I'm itching to get mine back now, but I've enjoyed it, and in sport mode the engine sounds brilliant past around 5,500 rpm.