Xiaomi India — Touchpad not working...!

Address:

Nagpur, Maharashtra, 440010

Dear sir/mam,
I deeply regret to inform you that your service is so unresponsible & nonstandard category type, even your asc does not provide the job sheet when customer submitted their phone in the service center.
I attended your service center on 13-july-2017 regarding my mi max phone for their touch problem. I submit my phone at asc & i was shocked they, not provide me simple job sheet, after that, i ask for same they told me just say you're token no. We will provide you your phone in evening.
When i go to collect my phone the person ask me for charges for touchpad & told me that your phone is in out warranty because your phone is bend & it is not covered under the warranty.
I purchased my phone on[protected] & it is in warranty so why i pay charges for same even my phone does have a single scratch.

So pls give me a suggestion for same & revert with the positive action.

I attached some photos of my phone, purchase bill & manual job sheet.