Bad Service and excess rip-off

I hired a vehicle from Europcar and got a slight dent in the side door. The dent was estimated at a few hundred rand to repair by a local repair shop. Europcar had their 'own' repair company fix it for 21000 rand and I lost my entire excess (R8000). On the same trip I tried to call their emergency numbers as I was going to be 2 hours late. I could not get through to the EMERGENCY numbers on the vehicle keys or any of the numbers provided. I was exhausted from a long trip, it was late and I was hoping to return the car first thing the next morning. When I eventually got through the next morning, I was denied and had to pay for another day. My initial bill of R3000 became R17000 and I have had to make arrangements to pay this off. I still had 4 payments to go but they decided to just take the remaining amount off my credit card in one go! My dealings with Europcar have been extremely disappointing and I would not recommend them to anyone.