Useless Mahindra service

I bought a new Karoo S11 in Feb 2025. It's been at Mahindra 6 times for the same problem. Not starting when the outside temprature is hot. Everytime I get it back with the promise it is fixed. But yet I am on vacation with a car not starting. All I want is for Mahindra to fix this thing, I don't care if they have to rebuild it, I want it fixed and a replacement vechile while I wait. If they cannot get it fixed, I want a new vechile. I was calm for long enough. And for them to check earth wires to find the problem is not working for me. I've had it with Mahindra not getting this fixed.