Mortified at what I bouth

I bought a BMW 116I from Car King in Newlands on 24/04/2025 for R90k cash. I was sold the car as is, however I was told that there are Runflat tyres on the vehicle, according to the tyre dealership there is not one Runflat on the vehicle. The batter in the vehicle is the incorrect batter, it is not even an AGM battery. Today my car just stopped working, only to find out that it could be the change that goes into the engine. I am so upset and Disappointed with the fact that they pulled the wool over my eyes just to make a sale.