Bad Management

I had a car accident on the 05 April 2017 but two months later my car is still in for repairs and I've paid 70% of my excess amount in order for the panelbeaterst to buy the parts, but they are not giving me feed back regarding progress on the car. Last week I called the insurance to complain and they asked the panelbeater to call me back and they did to explain they were struggling to get the parts but one week later I still don't have any feedback again on the car and when I call the panelbeaters they might take another 2 weeks, My question is couldn't budget get a different panelbeater because I don't think this is acceptable at all. But I am very unhappy with the service from budget insurance and the panelbeaters for taking so long to fix the car