Bajaj Finance — Unauthorised debit to my Account

There has been a debit to my account on the 2nd of Jan 2017.
The reference number is P[protected] for an amount of Rs.4559/-
Please note that two Bajaj Finserv EMIs are already being debited on the 5th of every month for different amounts.
My EMI could have bounced because of the above unauthorised debit.
Please resolve the issue at the earliest.