ICICI Bank — icici bank nach_ad_rtn_chrg (user id: krag2709)

Since may 2019, more than rs 3000 has been debited from account so far towards nach_ad_rtn_chrg without my consent and without any notification. I was maintaining minimum balance for the time of emergency and when i was going to make a payment then the amount was not there. What the hell wrong with the icici bank.
What is this transaction purpose?

Evertime i put money in my account, it is getting deducted because of the nach_ad_rtn_chrg.

I want a strong reply from your side dear icici bank.

My registered email id is [protected]@gmail.com