Xiaomi India — your mobile mei7s issue and service center said rudely didn't fix

Address:

Sec- 45B Chandigarh, Chandigarh, Chandigarh, 160047

I bought mi model mei7s on 14/10/2018
It is curving now automatically and yesterday screen closed automatically. You all know i have still warranty but when i visited service center, they said rudely that it will cost 4700 to fix.

Fyi it has not fallen off, not cracked, not any physically damaged so how i am being charged to re-pair it. This is ridiculous. So i am posting this issue with your dirty service center details at chandigarh and all the pictures on social network so no one can experience the same in future.