This place works on vehicles, they mostly over charge for spares and will mostly break your car rather than fixing it

This place works on vehicles, they mostly over charge for spares and will mostly break your car rather than fixing it. I sent my car there for engine work replacing of valves as there was no compression on cylinder 1. They charged me R21000 and my car was not fixed. It began over heating, it was no lolonger starting as they put a new ignition coil which has failed I thus had to put back the old one. Car is smoking and making noise. I am dissatisfied with their service and have lost a lot of money with them which I can not take back.