A month ago I was T-boned into my passenger door ('92 W124) while in a traffic circle. The other driver was at fault and I subsequently brought the car to a body shop (Madison Auto Body in Madison, CT) that the other driver's insurance (Progessive) recommended as a preferred body shop. It took the shop 2 weeks to fix my car and when I finally picked her up last night, everything was screwed up.
First off, my "new" passenger door is so warped that it leaks rain through the top and water enters though the door sill in the bottom when I hit a puddle. Also, none of the door lock anymore when I put the key into the driver, passenger, or trunk locks, so I manually have to push down the buttons in the doors. This means that the alarm does not work, either. Then, all my interior light switch between not working to flickering like chasing christmas lights and my windows don't open anymore when I push the window buttons in the center. Also, my antenna for the radio does not work. Next, the guys never put my door speaker back in as I found it under my passenger seat this morning. When I shut the passenger door, I hear a clanking in the door like a few lose screws.
To add to all this, when they put the door cladding back on the inside, they pulled the "leather" off the door, so I have the blister look all around my now cracked speaker cover int he door. On the outside, my door looks like it has not been closed properly and the "new" door is wavy looking in the paint when compared to the smooth look of the other three dingless doors. The white paint does not match all the other doors either as this one has a distinct cream look.
I have not been able to contact the Progressive insurance company over the weekend, so I am at a loss of what to do. When I confronted the body shop owner about the warped door yesterday, he said to me exactly "Well, you should be happy that you even got a new door. This car is 16 years old and they don't make anything for these cars."
I am very disappointed and don't know where to start in getting my car repaired. With all the electrical stuff that is wrong, I am afraid to drive the car as I am afraid that the airbags may either not work at all or go off randomly when I am driving.
I don't want this guy at Madison Auto Body to ever go near my car again and I want to bring the car to an autorized Mercedes dealer to have it fixed (Carriage House of New London maybe?).
Has anyone else had anything like this happen to them here? What should I do? Should I go take this up with the insurance company as they recommended this shop to me? Should I go confront the body shop owner?
Any help will really be appreciated.

Thanks so much,
Leo