Disappointed

In april 2019 i took my bmw e90 for vvt motor replacement to Selz Auto care in selby Johannesburg, business owned by selven . 3 weeks later had a problem again.Took car back, selven said new vvt motor faulty. Took vvt back to goldwagen in southdale. Told me will take 3 weeks at supplier. If faulty they will refund me. So i bought another vvt. Took it back to selven. Car was ok again. A week later i noticed an oil leak coming from valve cover. Upon investigation i noticed 5 bolts were snapped off. Contacted selven, he said those bolts normally break. Took car to him, he charged me for the work. I complained then he offered me a free oil service. In November 2019 my bmw oil cooler gave problems. I also had a slight noise from tge hydraulic lifters on high speed. I told him to replace the oil cooler. While the car was with him i asked selven to change the hydraulic lifters. He said it will take a couple hours. He had my car for 3 weeks. He could not get car out of limp mode. Showing vvt fault, but actual unit not faulty. He could not find the fault. I told him i drove my car to you. Only problem was oil cooler. Now car cannot drive. While my car was with him they also damaged my paintwork on the bumper. He charged me for the oil cooler and i took my car to m tech motorsport in ridgeway Johannesburg. They identified that selven swopped the 2 cams around. Intake was put in exhaust cam position. As a result.tge eccentric cam also got dameged. I had to buy new exhaust , intake, and eccentric cam. Also new vvt. Lucky i still had the other new vvt motor. I phoned selven and told him how they messed uo my vehicle. Bad business keep your car away from them.