Bajaj Finance — Amount getting credited against the unsubscribed policy's

I've taken flexi overdraft from bajaj finserv and not opted for any other services. But Bajaj finserv opting policy's without customer confirmation/interest and charging amount. Recently I've been receiving mails that I opted to some policy and they tried to charge amount and when I communicated with my bank and they confirmed that it's Bajaj finserv policy. I would like to know why it's been added without my confirmation and why the amount is getting charged.

For more details please find the below policy details received in the email.

Policy No: PP000208
Plan: HDFC Group Credit Plus:
UIN: 101N096V02
Message: Payment of INR 3750.0 against your HDFC Life policy for LAN HINS-1567971 is credited to Bajaj Finance Limited. UTRN[protected].