Xiaomi India — Product under warranty/Service center not supported

Address:

Bhubaneswar

Hi Team,
I submitted my phone 20-Jul-2023 on Bhubaneswar(Opp Lagna mandap Bhubaneswar, 751016) service center, my issue was all application opening automatically, they informed some technical issue leave your phone and it will take time to resolve.on 24-July, I asked them of status now they are saying your phone band we can't do anything as you have screen issue however at the time of submission they did not mention band and they gave one Receipt and mention Fault issue :System Application Fault. Cosmetic : Good Apperiance.
b)Again i connected phone service center thy connected with engineer and told me they have snaps where phone was band i aksed them photo date they said we don't know dates(means they are uploading other pics of any other mobile).

At the time of submission WHY they do not mention in that Receipt as your mobile was band they are playing with our TRUST/They are doing what they want.

Now they are saying pay 4300 amount or take your phone.

Please find attached photo where clearly mention system issue
NOW they band my mobile and saying we can't help you.

Please help me.