INCOMPETENCY, BAD SERVICE!!!!!

Im very dissapointed in Miway, earlier this year around June i was hijacked and the car was recovered. It was then handed over to miway whom placed the car under Labourious Panel Beaters, I recieved the car about a two weeks a ago after it had been with the panel beaters for a month and a half. I had the car for a week when i realised the seat heaters were not working, the radio was faulty, and some other parts were not assembled to standard, I then took the car back to the panel beaters on 8th Sep 15 and nothing has been done on the car till to date. I have to call the panel beaters each and everytime to ask them whats happening with my car because they don't bother to do anything. The response ive got since i took the car back is that 'they took the car to another dealer of which they are busy with car and they cant find the fault'. Of which shows INCOMPETENCE!!! Now i get stories of them waiting for the insurance to authorise. The assessing department could'nt pick up the fault when they assessed the car in the first place! I pay way too much money for such a bad service. Im really disappointed.