Exide Industries — Exide inverter battery imtt2000 200 ah. Still in replacement warranty but Exide gives me date date date

I have purchased Exide inverter battery in 2021 and is in still replacement warranty 9 months more but Exide care gives date and next date, but responded to give dealer and then to service centre.
Dealer replied pick vehicle will not pick up today or tomorrow.
If my Exide battery is in replacement warranty but why Exide not gives me replacement..
Even on 10w modem inverter automatically shows low battery..
While showing full charge.. backup time gives only 2 hours on 300watt.
Is it my mistake I have purchased inverter from Exide company.
My email id [protected]@gmail.com