Poor customer service

Mahindra – worst car dealer I bought my car from Mahindra in August 2022. I’ve had problems with the Bluetooth since I bought it. People can’t hear me and I have to switch it off whilst driving. I’ve complained about it to Mahindra on several occasions, including last year November and a month ago again. They’ve tried to fix it but then it works temporarily and stops again. Mahindra has mentioned that the radio was fitted by a third party and promised to get them to sort it out, but that simply never happens. I keep trying to get them to respond, but Mahindra is full of empty promises and poor to no service. I find this to be unacceptable and honestly, really pathetic. Complaining falls on deaf ears.