Bad car and service Pietermaritzburg

I rented a group N car from Avis Pietermaritzburg on the 27th of August. I got a Mercedes Vito that had a lot of faults and scratches. I asked the employees to help me move the seats so i can put my luggage in the boot and i needed leg room for driving and the seat was too close to the steering wheel. I ended up leaving the rental place 2 hours later with the seats in the same position. I had to drive it in a very uncomfortable position because none of the seats could move. There was something wrong with the brakes, the car would move even after putting the hand brake on. This vito should not be given to customers. I got the invoice later and instead of taking the money from the deposit they already took from my account, they took the money from my account again and i didn't receive my balance from the deposit. When i called Avis PMB to query this, Sbonelo gave me a number that only works on weekdays. I called back and told him that the number he gave me to query this only works on weekdays, so what should i do, and he gave me an attitude saying it's out of his hands, there's nothing he can do to help, i should just wait for monday. So i must sit with a negative balance in my account for the weekend.