Deceiving there customers and breaking the CPA

AUDI CENTRE BRUMA BARLOWORLD deceives there customers with selling pre-owned vehicles that is not road worthy and not fully checked before selling to there customers. They sold me a vehicle with oil leaks ,clunks sounds whenever I accelerate, Brake or turn, Engine light went on for the 2nd time and the engine malfunctioned twice on the 3rd gear. They also promised to give my money back if I was not happy!