IDBI Bank — Regarding irrelevent Ach rtn charges

On the 5th may my 4 EMI was going to be deducted from the IDBI account. i was in the jodhpur region at that time where the internet was off from the 2nd of May to the 8th may. after starting the internet I paid my all EMIs but in the last 3 days IDBI bank has cut the Ach- RTN charges 5 times. I request the IDBI team to refund my money
thank you