Claim not resolved 3 weeks after accident

I had an accident on 02/03/16 @ 18:00. Car was authorised to go to Rapid Panel Beaters. The next morning Premier Auto called to say they received my car. I went to my broker on 03/03/16 to lodge the claim. My broker called Zurich for authorisation to move the car to my panel beater, at my own cost, to avoid storage costs. They refused. I was informed that the assessment had been completed and submitted to Zurich on 07/03/16. Zurich insisted that my 2011 model car was under warranty and needed to go to an approved panel beater. I confirmed with Hyundai that my panel beater was on their approved list and my car was not still under warranty. To date to my knowledge they never gave authorisation to any panel beater to fix my car. I tried to contact Premier and they refused to take my calls. 2 weeks later Zurich decided on a cash settlement and are getting back to my broker 'tomorrow morning' for a week since. They still refuse to let me move my car. It seems like Zurich is getting a rebate from Premier to hold my car as they have incurred 3 weeks of storage costs. I am being inconvenienced without a car beyond the normal time it takes for a claim to be authorised and my car fixed