My greatest disappointment

After numerous attempts trying to buy a car in 2020 with we buy cars Cape Town, each time losing the car as it was given to another customer while in the process of financing. This happened 3 times, each time with a different excuse. I remained calm and still went back in 2021 to try again, this time I was not only sorely disappointed by the lack of service but by the car as well. After receiving the car on the 5th of February 2021 I literally drove 5km from the dealer when the car broke down. I then and there decided not to continue to deal with we buy cars. In this process of getting the deal canceled it has been a perilous journey, no one comes back to you with answers, if I don't call them, I don't get feedback. I get told by the manager that he is in a good mood and I can't spoil his day, what about my day? Needless to say, yesterday I received a message from them stating that I can collect the number plates for the vehicle which I don't have. Where to go from here? Is it incompetence, or do they honestly just don't care?