Exide Industries — Scooty battery not worked Even for 3 months

Bought a battery on 20/12/2020 on a warranty of 2-3 years ( have to check card), within 3 months it started giving trouble, than lockdown, after lockdown submitted battery for checking, in preliminary he said may be due to lockdown or idle it happened, for their knowledge in similar condition my other scooty with Ameron battery performing well...now they said you don't buy other we will return this after repair or replacement in 3-4 days...now almost a month is going to pass still saying we will call you once received...
My concern is if it was my car battery than how would have managed...I suggest to all user of this site never buy car battery from this company.
A mechanic was saying never buy Exide battery...as he must be saying after his experience and performance of this company.

I bought and submitted this battery to Delhi Auto Sales(Sardar ji ki Dukan), Kotla Market, Delhi -110091 on 7/6/2021