Xiaomi India — Mobile warranty and exchange service

My device poco x3 pro is suddenly dead on 1 st july 2022 the device is in warranty period so I visited Xiaomi service center they said they are giving me a replacement of this phone with poco x4 pro and there is no further option than this, poco x3 pro is gaming phone with 865+ snapdragon and poco x4 pro have 695 snapdragon this is so unfair they have to give same phone in replacement or give my money back because it's not my fault every poco x3 pro user facing this problem after miui update we need solution.
here are some details of my purchase history
My poco X3 pro Purchase date:[protected]
Date when problem arrived:[protected]
price of poco X3 pro:-20999
price of poco X4 pro:-19999