Xiaomi India — service center not provide service demand charge 4000 rs for display repairing

Address:

Amravati, Maharashtra, 444604

I have purchase xiaomi mi5 model X000TQN1DB IMEI no. [protected] on the date 30, /05/2018 from Amazon online store.After using 2 month screen display issue occured n this device Therefore we have show the device service center(Globle service center Rajapeth Amravati) tecncian without dignose device and demand charge of display while my device is in warrenty period they refuse to accept device the device is not physical or liquid damage service center visit date 23/05/2018
I want properly repair or replacement without any cost ..as per MI warrenty policy