Assessor's incompetence becoming a pain to my pocket

I was involved in an accident back in March, resulting in the process of fixing the car delayed because of the lockdown, then the car was fixed when we moved to level 3 and i fetched my car on the 25th of June. When i got to the panel beaters some of the defects that were caused by the accident were not fixed and i immediately contacted my insurance who then advised me to take the car if it is movable and they would look into the matter then i shortly recieved a call from the assessor who seemed to accuse me of lying saying that the scratches and dents were old, thats when i advised him to go back and look at the scene pictures, and the AR thats where he will see how the dents were caused, then he called me back telling me to take back the car to the panel beaters where it was inconvenient for me because it is 182 kms away from where i am.

I asked them to atleast get a panel beater that will be close to me or atleast convenient for me and thats when i was told that it was not possible, i then asked them to atleast compensate me with petrol money as it would be expensive for me to take 4 trips to their desired panel beaters ( 4 trips being going to the panel beaters and come back to my place of residence then going back to fetch the car and come back to my residence) with a total of 728kms expected of me to travel.

They then told me they would look into it, after countless calls to the insurance two months later i get a call from the assessor saying that they will not be able to give me any sort of compensation and i would have to make a plan and travel to their desired panel beaters.

It was not my fault that my car was not fully fixed, it was because of the assessor's negligence and not paying attention to every detail, now my pocket has to suffer. Can anyone please help me on the issue, thank you.