Xiaomi India — mobile auto off problem

Address:

SGN Enterprises,Bhagirathi 47/3/,Plot No 2 First Floor, Taware Colony,Surbhi Magal Karyalay Lean, Behind Sambar Hotel,Satara Road, Pune,Maharashtra,411009, 411040

Incident date : 30/04/2019

From last 2 days my mobile is having auto off problem. When i contacted service station (Pune) they told me that there is issue with battery you need to change it. I have explained them that i have purchased mobile on 28.04.2018 and battery backup is fine.
They have told me that we have checked your mobile it is because of battery.
I have paid rs 1355/- for the battery. And from the same day night it started giving same problem of auto off.

I thing they have unnecessary changed the battery as there was no issue with the battery. And they have cheated me for above amount..

Regards,
Manish
[protected]@gmail.com