Car sale

About 3 months ago I bought a car from MVS Auto Car Sales, 71 Joe Slovo Road, Klekrsdorp - The back head rests were not in the car, they promised me that they will get it and give me a call, the passenger door does not lock, the passenger window does not work and the back light is broken - The said that they ordered part, the car was taken in to fix all these problems, collected the car after 2 days, nothing was fixed - no replays on whatsapp messenger?