Bad service and used cars

I Bought a car from them and just two days after having the car the engine light when on, i took the car back to the, they give me a borrowed car to use for two days . Then the light was of drove the car for two month and after that the warranty was off the the light when back on. Ever since i have taken the car to them they cant fix it and every time its something new with a new costs. I have paid more then R70000 so far and still dont have the car ever since late 2017, i have been driving they borrowed car. Last week Friday they send me a quote of R46660 which is now something else. They service is the worse and have no customers service or respect for they clients , dont listen to clients. They car repair is never up to standard and you will forever take your car to them for the same repair and all they will say to you is that its another problem not the same just to make money out of you and to shift the problem from them.