Worst service experience with Carlo

I had the WORST experience at the Mercedes Benz in Bryanston, I booked my car in for service and requested that they have a look at the boot as well as it had problems closing, sometimes it would pop back up when I press the button to close. Carlo was my service adviser, I left my car with him and when I'd returned later to fetch it, my C-class coupe was in worse shape than it was when I'd dropped it, I had scratched on the front, my bonnet and left fender had scratches as though someone was wearing a belt and leaning against the car, my boot wouldn't close AT ALL, it would pop back up at first but when I went to fetch it, I could see wires exposed from one side of the lever that opens the boot almost as if they deconstructed it and didn't put it back together properly, I confronted him about it and he said he'll investigate and found out from the CCTV what happened, he looked me in the eye and shook my hand, this is my third week I'm waiting for him to get back to me, he hasn't called, hasn't sent an email or anything, when I do call the branch they say he's busy and I have to leave my details and he'll get back to me. I now have to go fix those scratches myself out of pocket, I had to go to Sandton to service my car, they even restored my boot to working condition.. the Bryanston Merc branch is the worst, the service there is the worst, you're better off going to Sandton.