Xiaomi India — I am complaint about my phone is suddenly dead but not get replacement

Address:

Opp post office,khodiyar street,sodvadar 360440

I am buy mobile xiaomi 12 pro at 5/7/2020. and after 12 day suddenly dead same problem like poco X4 dead problem occur but xiaomi not replace my piece he is only repair my phone and when i geeting service centre not ask me what is problem in my phone my whole day waste in service centre but not ask any thing probper answer.i want replacement becoz my product used time is very low only 12 days and i am pay xiaomi highest pay mobile value so why should i used repairable piece.