Poor customer service

Late May this year my mom got into an accident with my car. My insurance did their thing and my car was sent to Ultimate cars (panel beaters) for repairs. They received my car in beginning of June. When they ordered parts from @gwmsouthafrica_ there were certain parts that were Not available in the country so they had to be put on what was called a back order. Those parts were on back order for over 2 months. They were eventually delivered and ultimately cars was able to repair my car. 3 months later the car is sent to Haval Pinetown for a diagnostic Test, my car has been with them for over 4 weeks now and I’ve requested for a courtesy car because to be honest, I’ve been patient enough. I’m being given the run around, @gwmsouthafrica_ says I should be getting a courtesy car from Ultimate cars but how because @gwmsouthafrica_ Is the reason why it took soo long to get my car fixed. When I called Haval Pinetown to request for a courtesy car, I was told I’m barking at the wrong person on tree, the lady eventually told me that she didn’t get into an accident, it’s my fault that I got into an accident.