Poor service

I hired a car on 27 Nov from Avis at OR Tambo. Was provided with a substandard car with numerous marks on it. When I tried to complain to the consultant at the car bays she showed me her iPad with pictures of all the marks. I was rushing so didn’t want to persist and took some pics of my own too. Dropped the car the following day and hours after doing so I get a call from Avis harassing me about a stone chip on the windscreen. I politely told the consultant that the chip was there and that they shouldn’t have provided a car with all the issues in the first instance. Very disappointed with Avis for 1) providing a sub standard car 2) calling me about a stone chip that was already on the windscreen.