Absolutely terrible service!!!!!

My wifes car was in an accident, and Discovery appointed an assesor to asses the damage. It was not done correctly, and the assesor had to revise the initial quote twice, wasting time. The parts were eventually ordered and arrived during the week of 15 May. On friday 19 may i visited the garage where the vehilce is being fixed and they informed my not all the parts were ordered. The new parts were ordered on 22 May, and now i have to wait another 21 working days. I have been without a car since 2 april 2023. My rental car is now also expiring due to the fault from the discovery appointed service provider, and i have to wait another month. Discovery dont answer emails, call centre is useless, and the discovery appointed assesor is non existent. Service is absolutely useless, as i have been a client for over 10 years.