Worse Dealership in South Africa

If i could say zero i would say zero worse dealership ever, i bought a 2017 BMW X6M in 2022 with 133 000km for over R900 000, I had it for one day and the motor blew , the Dealer agreed to fit a new motor , i got my car back after almost 8 months of waiting . i didn't even drive the car for a month and the motor blew again , they told me they replaced the motor but they **** they fixed the old motor that blew and you cant fix a motor that blew on a performance car, when i went back to them they refused to take the vehicle back or to fix the vehicle. .