ICICI Bank — Indiscriminate ECS deduction

My salary account id with ICICI bank. During the lock down period I have applied for moratorium for my loans, But the respective banks have dropped the cheques for clearance. I have been charged nore than 4000 rupees because of insufficient funds. I requested a lot for the waiver and refunding of this amount as it has been the lock down period, but in spite of requests again yesterday an amount of Rs 2400 has been deducted for the same. During this lock down of three months a total of Rs 7000 has been deducted becuse of which I have missed a couple of EMIs.
It has been very difficult to manage with less salary during the lock down, again these kin=d of deduction is adding to our problems. Please consider my plea and waive the charges and refund the amount as we have been passing through a difficult phase because of lock down.