Redmi — Redmi Note 7 Pro Battery

I am using Redmi Note 7 Pro from last 3 Year
now battery has gone Bad so i went To MI Service Center they Said that
this model has been stopped we cant Replace battery for it
if you people are not giving after sales service then its against the law of india my mobile is in brand new condition and also they said to take new mobile i need battery Replacement or else MI should stop selling the Mobiles in the India we dont need this kind of company