Undermining my consumer rights

I am thatayaone Abram moepeng. I had a very poor service at auto champion motors at I bramfomtein, I bought Audi A3 under decra and Within 30 days my car broke stubaxele and the car dealer did not do anything instead they tood my car to their service center now I have paid the storage fees of R17,500 which make me feel like my consumer rights where undermined and I still don't know how can I be assisted I have evidence that they gived me a car that is not in good condition