Xiaomi — MI10I new phone is not working properly

Phone is not working properly, new phone delivered on 5th Feb 2021 and unable to use it.
I had visited 2 times to service center and they are unable to correct the problem as it is new phone & Google drived & don't have authority
1) always got hang in every application.
2)while using message app. Unable to select recipient or it will take 15-20 seconds for each selection seperately
Mean to select 2 recipient it took 30 seconds
3) auto call recording option is not available.
So, please replace my hand set with new phone.
Regards
Alok Kumar Singh