Mahindra bad customer service

When you thought that mahindra was the best at solving its customer complain well think again. We bought a car noe in August the KUV 100 nxt brand new. A month later the car started making a sound like there was air coming in from the windows and when you brake the cars sways to the left. Have been complaining about this from September and they they took it in 3 times already. At first they said that there was nnothing that they could (Ford eagle) twice. Then we took it back to the alberton branch where we bought it and they said they were going to come back to us. Always its us that have to do contact and the response is still not helping. Now they are saying that they need the car to go for alignment and i must pay for it. How 8s that possible when the car is new i must pay for a factory fault that they can't fix. I wouldnt recommend this brand to anyone. They said also that its made in India and India there is no congestion there so the car wasn't meant to be droven fast. Clearly it wasn't tested properly. They took out the doors and tighten it atill the same sound is still there.