Poor service, High risk

I booked the car in advance about a week before a date of collection online. I did follow all the steps doing a transaction payment online. The bookings were approved. The date of collection was 18/09/2020. When I got there the car I booked was not available they gave me other one which Nissan Almera instead of toyota Corolla quest manual. They replaced it with automatic. I had no problem with that. The representative took me to do external inspections. Then he said that everything is fine. I drove a car to Eastern cape along the road the car was not braking. I drove thinking maybe is just a minor the car became more worse,. I decided to call them at their call center for assistance. They promise to deliver other one from East london. I was late to get to a funeral as we can meet later on Saturday around 15:00 . They promise to comeback to me. They didn't callme Sunday I had to comeback with that car . I drove a car taking such risk. Till I arrived ,on the following day I drove a car back to their branch Potchefstroom. I raised my concern again.,they apologized say that a car was overdue on service. It was the only they gave me. What if I was involved in accident and I become in fatal. My plea don't trust Avis cars their service is not guaranteed. You can follow them and ask why they gave such a car without doing proper inspections. My is Louis Krweqe.thank you