Bad Customer Service

I took my car to be fixed, it was smoking,shaking and didn't have power. when i got to Jerry i explained to him what was wrong with the car and he said he will check it and give me the quotation. he come back said it an engine qoutated me R7825.00. which i paid. the car went back to him 3 times cause it was still doing the same thing.He said the car needs an engine mounting which i bought and gave it him. two days later he change his story the car doesn't need engine mounting but gearbox mounting. told him to sell the engine mounting and buy the gearbox mounting as i am not going to be buying and keep on paying while the car is not getting right. its 3 months now going back and forth with him. so i decided to take my car home and its worse than it was the first time i took it. When I ask him why is the car worse he says its injectors. this guy took my money and my car is still parked while i'll have to use public transport.