Xiaomi India — Product service failure during warranty

Address:

Karnal, Haryana, 132001

I bought an mi 4i during jan 16. One day suddenly its display went off, u went to service station they said it is covered under warranty and will b repaired in 15 days it has been more than a month and mobile is still nor repaired. Service center says they are not sure when will they will repair it. Mi customer care says they dobt know why service center is not solving the problem. I have sent multiple mails to mi but they just acknowledged the mail and never revert. I want to go to cosumer court foe this issue and claim damages foe waste of my resources.