Worst Experience!

Where do I even start? My car went in for repairs last year, got my car back and there were faults in the repairs. I took my car back to get that fixed. I found more faults, took the car back in for the second time for this to be rectified. My car went in Tuesday, I was promised my car back in 2 days, I got the call to collect the car. Where the fault or damage was then there was something else. Fast forward, it's a week later I don't have my car back. I've been calling, cannot get to speak to anyone to help. I've been waiting on a callback, I've left messages and promised a callback nothing. My insurer had to call them, I got a call from someone promising that I would get a call to collect my car, still nothing. I'm so disappointed in the service delivered, that a so-called accredited panel beater can deliver such mediocre services.