Xiaomi India — Phone is not working after miui update

Hello Xiaomi India

I have bought redmi note 10 pro Max on 4th may 2021 my phone worked okay for 15 months.

On August 4, 2022,
My system updater shows new
MIUI update ..after updating my phone didn't start..

I visit to mi service centre ( GTB Nagar) and they said the motherboard of the phone is dead you have to pay Rs. 12, 500 for a new one.

I have complaint serval times on ''mi customer care number'' and on ''mi grievance number'' regarding my issue but all of them closed my complaint and said I have to pay RS. 12, 500 to get my phone fix..

What kind trick is this you sent me an update (MIUI update) and make my phone useless...

Is this the customer value you provide??

After the expiry of the warranty of phones you just send an MIUI update to make our phone software dead???
Stop these unfair practices and fraud you are doing.