Bajaj Finance — Deduct amount from bank

Address:

Kalyan

On 16th oct 2020, i got sms from bank (Your a/c has a debit by transfer of rs.117/-on 16th oct 2020.)
In next day when i update my passbook, , passbook entry shows"cmp mandate debit bajaj finance". When i asked that shopkeeper,
He approached that bajaj finance person and he said "this is ecs charges deducted by bank, , bank showing our name."

Actually i purchased washing machine last year Aug 2019 on loan basis (Bajaj finance), last installment deduced from my account on June 2020.

How dare to bajaj finance deducted this amount without informing. We can't trust on bajaj finance, , i feel that bajaj finance is also not secure for providing bank details. Refund me that debit amt rs.117/-