IDFC Bank — Ecs/ACH Refund charges

Hello,
My name is Akash Dilipbhai Patel my father had a loan account in IDFC bank before around 6 months and the EMI of that loan is paid every month from their SBI account.
The problem that we are facing is the service that is currently running and not stopped by banks and they have already debited are ₹ 2000 as ECS/ACH Refund charges. After the loan settled and NOC from bank is received. So please do the needful and take appropriate action in this matter.