BAD CAR SOLD AND BAD SERVICE GIVEN

Honde dealer in West Rand sold me a car in February 2015. In the 1st week of driving it after i bought it I heard noises in the car and took the car back for them to check and they responded there was nothing wrong. I took my 1st and 2nd service to them and both times asked them to check for the noises. They responded again theres nothing wrong and everything is fine. Now the 3rd time I took it for service, after they serviced it and gave me the car back, I asked them if they checked what the noise was and they said they did drove it and there was no noise. I asked to still go and check in the cars engine and then they checked. Then after that did they finally came and tell me there is a problem... The problem is going to cost me R30000!!! They do not want to fix it even when they even offered me a maintenance plan which I took out with them. The service is bad, via phoning and emails never correct! The dealer principle doesn't even know what is going on and what I have signed in the agreement with them. He doesn't even check my contract with them and takes days to response to my email and thats only after I email him again this morning! DO NOT BUY ANY CARS FROM THEM!