Poor Customer Service

My car was in an accident in January 2021. They took my car to Renew it Rivonia. They fixed tyres when the car was not starting as a result of an accident. I collected the car and it broke down on the same day. They took it to the dealership that manufacturers the car they were given a report stating what the problem is with the car and that it's resultant damage from the accident. It was taken back to Old Mutual assessors and they still say that the damage is not as a result of an accident. They rejected the claim.