ICICI Bank — ecsrtnch & nach charges they have charged 9000

Dear sir/madam,

We would like to bring to your elite notice that iam one of the customer of icici bank and now i fully scared on this bank for whether they debit my account balance or not. Because they unwantedly charged my account balance without my knowledge or permission through sms, mails and phone calls. I don't know why they charged using the way of ecsrtnchg and what is this?
I already posted the same complaints on hdfc bank loan account for asking why ecs charges made and they replied me that the hdfc bank doesn't charged for emi ecs bounce charges.
Respected sir i want to know why the icici bank charged my account.in this covid-19 pandemic days so many people are very disturbed for this type of charges. Atleast they have maintained some s complaint. Kindly i need my amount reversal for my icici account. Its amount near by inr 590×15= 9000 approx. And i must have to know why the icici bank charged this amount. Please do some needfull.

Due to covid-19 we are facing so many problems we enquiry financial persons they are telling to bank icici bank and went to icici bank they are telling to ask financial merchant. At this context to whom should we have to ask our deducted money.

In this regard, we sincerely request banker to provide the concern deducted amount in our account.