State Bank Of India [SBI] — Credit Card - SBI BPCL

I recently got my SBI Octane BPCL credit card & noticed that the backend team had entered the incorrect email id so I decided to change it in the app using the "Update e-mail ID" option but, was blocked saying the option has been disabled due to security reasons, I proceeded to make the change via mail by sending self attested documents using my email id but, the request has been rejected saying I have to send it via registered email, when the backend team has entered someone else's email ID that I don't own I don't know how it is possible for me to send a mail from someone else's email. I decided to cancel my card as I don't want to risk my personal information sent to someone else's email, I raised the request for account closure but, the bank has rejected it, I haven't even used the card for any transaction due to this security issue but, on 03/07/2023 I have been charged with ₹1, 767 as joining fees & haven't even received the joining bonus reward points after making payment. Last month I got a call from an executive saying that I need to wait for a month to make email or phone number changes via app but, its still frozen. SBI has been rejecting my account closure request as well & I don't know why.