Renew it - Appauling service

I am so disappointed in their service & the lack of customer service. They took 4 weeks to repair a job that was under 10k. On collection of my vehicle, it was not ready. I had to drive it without a spoiler because they did not have the glue to attach it onto the car. Furthermore, there were scratches, dents & serious flaws in the paint work. Some of the damages were not from the accident. I was promised that all will be sorted out as soon as the glue arrived. My vehicle went back after about a week. I notified Isaac of a noise that i could hear when I brake & asked for the mechanic to have it checked out. It was at the workshop overnight. On collection for the 2nd time around, there were new damages, paint flaws, including a windscreen chip. The photos that were taken when my vehicle arrived there after the accident proved that these damages did not exist on my vehicle. I notified Isaac of my dissatisfaction & I also notified my insurance, Discovery. I was told to bring the vehicle in for a few days again. How can I take my vehicle there for the 3rd time with this level of service? It is evident that vehicles are being damaged while at the workshop. It's now 2 weeks since Discovery escalated my mail to Renew it. I have not received a call or any communication from them. I cannot understand how Discovery Insure does business with these guys.