Disappointed and unsatisfied customer

I bought 3XO MX2 in November 2024, speakers replaced 5 times and I’m told not to change the settings or pay 12K for better speakers, start and stop doesn’t start automatically 10 times now and i was told to break proper then I won’t experience it,Radio screen fixed 4times as it would just go blank no sound nothing and at some point it was balanced with a white paper on the sides and 5th time it was replaced and it still switches on and off on its own, funny sounds inside the doors,aircon making whistle noise, breaks makes noise and everytime they say it’s replaced and the disk as well but no changes,Everytime I take the car back they give me a receipt that says no issues, reverse assistant gives a question mark, customer service the worst, I even have a nickname in Midrand dealership ‘the radio lady’. I’ve been referred to different people in Mahindra and they still can’t fix my issues, on Friday when I called the head office I was told to wait for feedback for an hour and I’m still waiting. I’m so frustrated and my warranty ends now in November. When I report all this issues they all act surprised and tell me they haven’t had such issues before even at the head office. Whenever they fix they break something.Where exactly am I supposed to get assistance?