Bad service from my insurance

I have insurance with auto & gen my vehicle was involved in an accident early July. I stayed for 5 months without a car. They send it to their Pannelbeater who never touch that kind of a car. If it was someone who know the kind of the vehicle they should finish on time. They called me to come and take my car, I found faults on my vehicle, engine light was one of the faults. I asked their mechanic about the engine light that comes on and he told me that is goner go away. It didn’t go away. I called them about the faults they said I must take it to the dealership and get a report. The vehicle is broken (engine knock) I waited the hole month without knowing anything about the wayfoward. When I speak to the dealership they told me that they need an authorisation to strip the vehicle, even now no authorisation and I am struggling with the transport. I have to rent a car to have a transport but I have a vehicle with insurance. The money I keep on loosing is too much. No one feel what I feel.