Xiaomi India — Service center & customer support not providing help

I have purchased xiaomi 11t pro 5g just 3 month back & i am facing a issue in it & service center also mention that the phone has battery or motherboard issue but for that i have to leave my phone atleast 12 days i am a college student & a just 3 month old phone has such type of manufacturing fault & for that the customer has to suffer. I request Xiaomi to kindly get in touch with service center & order that parts so i could submit my phone & repaired asap .