AVIS credibility not good

Rented a vehicle from AVIS Cape Town airport on 16 to 17 April 2023. Returned the vehicle in good condition however got charged for windscreen damage. As I did not notice any damage to the windscreen I challenged the charge. I was told that the inspection before me showed no damage. I requested proof of the damage however AVIS cannot provide proof of the damage as they only take photos when the damage is more than R10 000. I therefore cannot get proof of the damage however I have to pay the damage based on the branch. It is therefore their word against mine. This is not acceptable. I now absolutely do not trust the branch and recommend anyone renting there to take photos of the vehicle before and after and take a snapshot of the inspection sheet where the person accepts the vehicle back from you. I am very disappointed as I am using car rentals regularly and all these checks is supposed to be done by the branch. Why do I have to protect myself against AVIS? It is my prayer that AVIS improves their service as I see similar complaints here on hellopeter, however it will not be for my benefit.