Disappointing experience

I bought a car from this dealership in August 2021 and the experience was a little disappointing at best. Firstly, the car's advertised price was R10 000 less than the floor price. They don't state it in their advert that the the advertised price is for cash buyers. Salesman was not completely honest about the car's service records but he was open about the car's accident history, which I appreciated. The finance and insurance young lady insisted that I sign an '"*******"' document absolving the dealership of their legal responsibility, as per the consumer protection act, to warranty the vehicle for 6 months. This is because I opted not to buy their warranty which has terrible reviews online. The cherry on top was that they couldn't have the decency to fill up with at least R500 of fuel upon delivery of the car. The fuel light came on just as I left the dealership, they claimed to have poured R150 only. They made R13 000+ commission on the finance deal, profit on the sale and I paid R6000+ for delivery of the car and they couldn't be decent enough to pour R500? That was pathetic service in my view. I would never recommend anyone to deal with these guys again.