Zakspeed Diesel Power worst service.

Zakspeed Diesel Power Took my Jeep to them for repairs. They told me that 8 valves were bent because of the cam belt that broke with meant I had to get a replacement head. I still have the old head by me after it was inspected by another engineering company and not one valve were bent. After 5 weeks I got my Jeep back and it broke 2 rocker arms again within a week because of a timing issue. Buddy refused to repair it claiming the parts was a faulty and it was a valve that was bent again. I removed the vehicle and had it repaired by another service centre. When I had a look at my dash cam footage I could hear the one technician saying that he is going to tell me to F@#$ off when I asked them to look at the central locking that also stopped working when I got the car back, you could also see that they were aware of the issue before returning the car on the dash cam you can hear them saying it might be a sticky valve. Worst service ever I send mails to the ADCO Gauteng regional manager and the National franchise manager on the website and never got any response.