Bajaj Finserv — Unauthorized debit from my bank account

Within past 6 months (March 2020 to august 2020) bajaj finserv has debited rs.6096 from my bank account.

After successful debit for each month of emi payment, they have taken a transaction fail fine amount of rs.295 rs in august and rs.295 in april.

Also a huge amount of rs.1000 and rs.4506 was debited from my bank account my bajaj finserv.
The wort part is all these unauthorized debits are not shown in bajaj finserv's account statement. But it is clearly written in bank statements that it was a debit by bajaj finserv.

But the bajaj finserv says that they havent done that, the bank would have.
So we contaced the bank, an bank officials says it was debit by bajaj finserv