The SA taxi finance is nonsense

I bought a car in SA taxi finance on the 14 of July 2022 The car started giving me problems on the 18th of July the deff was licking oil the car is making noise in the front suspension and the tall gate allows water inside and also the drivers seat I took it back to be fixed they never fixed anything the just took it and put it at the back but they expect me to pay the monthly installment while the car is not working and it a 2018 model they said they don't do contract for 8 years to pay but my contract was 8 years to pay they don't care if you report them or what they finished the petrol on the car and didn't bother to refill the I had to refill myself