My Ford is the worst car I ever drive

I bought a 2015 Ford Kuga 2.0 TDCi titanium allwheel drive in October 2021 from MitMak motors with 92000km on the clock. After I drove about 8000km the car start giving problems. I took it to the Ford dealership in Harrismith and the workshop manager said to give a quotation they will have to do a lot of stripping before he can give a quotation because they don't know the model and did not had one for repairs. I took my car to a RMI registered workshop in Bethlehem because I know them for years and they started working on the car in June 2022, long story short, after almost R200000 repair costs the car is still not in running condition. I did talked to MitMak in the beginning and after several discussions the refund a small amount of money, as time goes on things just getting worse and I contacted Ford South Africa for help but after several long emails they just walked away from my problem. Wat I want to state is that this was the first car I bought from MitMak and also the first Ford I ever drive, I just wonder how good MitMak and Dekra check a car before it is ready to sale, and secondly don't Ford motor company just walk away from problem vehicles, an yes I know about all the rules concerning used vehicles, but then again this car now have only 102000km on the clock