Citibank — Wrong balance of account shown. Overdraft facility activated without informing & no resolution despite multiple complaints

Hi, My suvidha a/c [protected] was showing 27 lacs balance on 15 June 2018. Hence I submitted a cheque to transfer 25 lacs to HDFC bank. You honored the cheque without informing that it includes Rs -275042.59 of ready credit from overdraft a/c. I realised the mistake & called the bank between 15-17 June 2018 & told them that I dont need any ready credit & I would transfer the fund to my suvidha a/c [protected] immediately & hence consider that as payment against my overdraft. They assured me it will be taken care of. I transferred 4 lacs to to my a/c [protected] on 18 June 2018. I thought the matter is resolved. But when I was checking my bank statement on 8 Apr 2020. I realised the back had been charging me principal+interest on the -275722 for past 2 years. I immediately wrote a email complaint to zeal.ajay.[protected]@citi.com Wed, Apr 8, 2020 at 10:36 AM. I recieved no reply from her end. I again thought the matter has been resolved. I again realised on 2 March 2021 that citibank has continued to charge me the interest on the overdraft. I went to citibank branch on MG road bangalore to file a complaint for the same & they told me that bank will contact me in next 48 hours. I never recieved any call from citibank. I met with a family crisis on 3 Mar & couldnt attend to this matter. Please urgently tell me how much interest have you charged on this overdraft & immediately reverse the same. I have had a long relationship with Citibank. If this matter is not resolved in next 24 hours I will take away my account from citibank & also initiate a complaint with the consumer forum & banking ombudsman. Regards, Saurabh