ICICI Bank — Deductions without my permission

Hello my name is kanwar pal singh, I am a ICICI bank account holder, from past few days my account is getting debited for no reason by the name of NACH_RTN_CHARGE_INJENOT~04JU, they say my EMI bounced but I cancelled NACH MANDATE months back, when I go to internet banking of ICICI bank there is no active NACH mandate on my account, I have tried to contact the customer care of ICICI bank they kept me on hold for 27 minutes after that they transferred me to their senior, the senior person said that they have taken the complaint and I should get confirmation by evening of July 17 2023 on my registered email or phone number and my issue will be resolved by JULY 18 2023 evenin. I didn’t get any confirmation email or SMS about the complaint and my issue is unresolved till now. In last few months they have dedicated almost 4000 INR from my account i am tired and feeling helpless after all this I don’t know what to do. I want my money back also I want to complaint to RBI about this monopolies. I am adding the screenshots of talking with ICICI also the deductions