poor workmanship and inflated price

I took my car for repairs in December 2014 for repair, I was charged R10000 and he promised to send the warranty /guarantee and it never came, the car broke again on 20/June , took it back to him and I was charged R9300 and again on the 4 july the car broke again with the samefault and I rook back to him ow im struggling to get my car back