Car Issues

I'm going to be straight to the point. My golf 6 had an issue. It was just serviced and then it just stopped working. Took it to Vw Bryanston. They said they sorted it out. This was in August. Since then I have been taking my car back 6 times. Tomorrow will be the 7th time for the same error. I will go to the motor ombudsman if this is not sorted. I have only 1 and a half weeks before I relocate. They need to sort it out before I leave. How does this work. 7 times for the same error. I need help and need help now.