Bad service outsurance

I was in a accident in November 2018 with my mini bus, outsurance send my vehicle in for repairs to there panel beaters. I was promised that I will receive my vehicle on 07 December 2018 but when time comes it was lots of stories and was promised by panel beaters I can get it on 10 December. On 10 December I got a call to say ,sorry 11 December . The morning of 11 December I got a call my vehicle is ready for collection. Not even 2 hours later a received a call from the panel beaters that there was a accident and they broke my sunroof glass. The afternoon they called me to tell me it is temporarily fixed and I can pick my vehicle up the morning of 12 December , when I got at the panel beaters I had to wait for almost 2 hours because the vehicle was still not ready. I only got my vehicle the afternoon and had a perspect on my roof to cover the hol. Today is 1 March 2019 and im still driving with a perspect for a glass and every time the perspect gets loss and have to drive back to the panel beaters . Outsurance now promised every time that they will sort out my vehicle and I'm so sick of they're lies. Dont know what to do anymore. I think outsurance sent me to a bad place to have my vehicle fixed and know they dont want to take responsibility. This is so BAD service from my insurance company.