We buy cars at the Dome

I went to We Buy Cars to look for a car on Saturday, and then I got a car. I drove two automatic cars after that. I took the car to my workplace, and after working hours, I went home. On my way home, I got stuck, and I tried to call them. Because of my calls, I ended up sleeping in the street. They didn't tell me the problem with the car. This is so frustrating! After 5 hours, the car is still stuck with me. They were supposed to swap it out for me because the car was not in good condition. They promised to fix it while they didn't tell me the problem with the car; they told me that the car has no problem. But now I feel stranded. They wanted to give me a car that has a gear problem. The 30-day rule isn't working for them because when a car breaks down within 30 days, they have to fix it or swap it for a different car, but they refuse to do so. I paid R145,000 for a broken car. We Buy Cars is not the same. There is no even a courtesy car