McCarhy vw Silver Oaks

Morning my name is theodora can you'll please advise how can u pay a car every month that stuck every month and I'm still pay ever month the car. I did bought the the by McCarty vw silver oaks. This people didn't tell me the car have a problem after 3months I drive it. Sins I'm driving it leaves me always on the road and they tell me that they can help me so please can you'll help me to sort the problem out because I'm paying every month R2200 and I still need to pay this car for 4more years Sins I'm driving it I did try to fix it on my own and already spend like R9500 already out of my own pocket I really need help