Bajaj Finserv — Irregular deduction of mandate fail charge on personal loan account

I took a personal loan of amount rs. 39000/- in jan 2020 from bajaj finserv with emi of rs. 3, 250/- pm for 8 months (Loan account 402dpffn958810.). Since then emis are being deducted regularly from my s/b/a/c @3, 250/-. And loan has been cleared in august. However, recently (15 sept 2020) rs. 295/- has been debited from my bank account towards mandate fail charges. Since i am not at fault for paying my emis, how mandate fails charges can be deducted.