Terrible after-sales service and warranty service

I am very disappointed with Mahindra. My mother recently had a problem with injectors on her XUV300. Mahindra Pretoria North attempted to fix a completely wrong part. Mahindra Hatfield had her diesel tested, and then cleaned the old injectors and had it re-installed and the vehicle was still giving the same problem. It seems like no Mahindra dealership is willing to do an ordinary warranty claim. Mahindra Hatfield also **** and gave us the run around for three weeks while she was sitting without a car. This was our family's 4th Mahindra, and as a result, we won't buy another one. I wanted a Scorpio N but this is so concerning that I won't purchase a Mahindra car again.