Unhappy customer

I bought a Nissan Navara 2006 model in December 2019 I paid R130 000,00 in February 2020 the car broke down, I called Machenic to diagnose the car then I took the engine to the engineer they told me same finding of the Machenic,I called the dealer and let the engineer explain the faults with the car and the only thing that the dealer said was the car was moving when I bought it,it cost me close to R30 000,00 to fix it,but it keeps on giving me problems now the car is parked I even lost my business with spar because of this problem,please advise.

Given