Extremely poor service

We took our Corsa Lite in on 18 March with an idling problem, gears jumping out problem and a wheel bearing replacement. We understood that we would get the car back on 22 March. Since then every day we called, they say we would get it tomorrow. Eventually got it back on 5 April with a bill of R18215, only to find that the gears are still jumping out. Took it back the following day only to be told that there is a 6 month backlog on one of the parts needed to fix it. They decided to charge us R7949 for the parts and labour so long. Can you believe that! We returned the cable they left in the car and asked for a refund for the work not done. Will see if we ever get that.