Car breaking down now and then

On 29/10/17 I bought an avanza which had a breakdown 3 days after, I informed the dealer he suggested I take it to a mechanic they suggested, the mechanic called me and said the car was fixed so I went to collect it apon my arrival he said the dealer hadn't paid him so he can't give me the car, I called the dealer and he refused to pay until I threatened to cancel my contract with them so he paid and I got my again after 3 days it brokedown on my way from work, i again informed the dealer he said i should take it back to the machanic so i called my warranty they sent a tow truck which could only tow the car to the nearest mechanic which was at witbank, a day after I was called by the machanic who informed me of the problem which was an electrical malfunction which my warranty could not cover, I informed the dealer but he refused to pay it out saying he had told me to take it to the mechanic they said i must take it to, i made a loan and paid it out of my own expense since i needed to use it for the festive season, on 24/12/17 it started overheating so i took it to the 1st mechanic he said they are closing for the festive season and could not assist me on the 5/01/18 i towed it back to the machanic and informed the dealer he said he couldnt assist me because jis boss is not available, i am unhappy of about the car and want to cancel my contract with the dealer the car has put me indebt please assist me