Hero Electric — Optima CX Battery Issue

Address:

CHROMPET CHENNAI

I have purchased Optima CX single battery from Hero dealer Jayabharat Motors, Chrompet, Chennai on Dec/3/2022.
Am getting only 20KM for each full battery charge . I have reported this to the dealer and a service request created on Jan/02/2023 ( Jobcard No 696) .
They have tested the battery for 2 days and told a warranty request raised .Post a week they told me Warranty rejected since battery Amph rating is 22.5 ( should be 22 Amp).
But am still getting only 20KM mileage so raised this request with dealer . Multiple days of testing, now they are saying battery warranty/replacement applicable only if Amp rating below 21 .
The scooter is no longer useful if I get only 20KM. Please help to fix this issue.