State Bank Of India [SBI] — Deduction of pos machine charges from 1 year after returning machine

Respected sir,
I Indrajeet Singh Jadoun ac no [protected] has taken pos machine in 2021 june month.
But i have given the pos machine and application letter for disconnection on 14 july 2021 to the bank manager.
And has reminded the bank manager many times by written and speaking way but has not listned to me.
But till now 3 june 2022 it has not been disconnected after complaing so many time via mail, letter, call etc but it is not disconnected till now and charges are regulary deducted since last year.

Therefore, refund all amount deducted from 14 july 2021 till now.