Bajaj Auto — amount deduction

Address:

F/401, Barsana Residency, Undera, Vadodara, Vadodara, Gujarat, Undera

Amount 340 and 72 have been deducted from my account even though I have paid my pulsar bike installment with the late fee. Iam not able to understand what is this for and why this happened without even notifying me. On 18 Jan when I saw my account statement amount of 340.90 was deducted with a message NACH_AD_RTN_CHRG-BAJAJAUT-06JAN20 and on 14 also 72.10 were deducted from my account with the same message NACH_AD_RTN_CHRG-BAJAJAUT-06JAN20.

My Loan deduction date is 6 of every month but I missed and deposited the loan amount with a penalty on 7th January 2020. Then after 7 days, they are again deducting the amount from my account.

I request to please help me out with this.