Hyundai Centurion terrible repairs

Hyundai Centurion for the second time gave me faulty car service. I took my car in for a clutch repair and service on Tuesday and was called to pick it up on Thursday, the moment i drove it the driving system light error was on and the car drove strangely. Took the car back the following day and now they say theres a new issue that want there to begin with. To date, they still have my car and won't provide feedback in writing. So i have no car and R10000 down the drain. They dont care, they do it all the time.