Bajaj Finserv — illegal extra charges over emi amount

Address:

Pune, Maharashtra

Dear Sir,
I purchased a TV and washing machine in January 2019 under bajaj loan. My EMI amount was going properly till March. In April I had money in bank but no EMI was deducted. After 2 days of due date I get a call that due to technical problems ECS could not be done. I was sent a link to pay through paynimo. I paid using link. But I am still getting messages that 450 rs is due as delay charges. How is the delay from my side when I had bank balance and why should my CIBIL score get effected with no fault of mine. Please rectify this issue as I am a old customer.