State Bank Of India [SBI] — Net Banking mobile number not being updated

Address: 829203

Website: www.sbi.co.in

I am a account holder who is trying to update her mobile number since last one year, but no one is bothered to help, and i am unable to change my otp so not able to change my password, i am stuck with the bank, deprive o[censored]sing my account. I tried visiting the branch writing applications but no response, the logged complain in the customer care then also no response on the contrary received a message that the issue is resolved without contacting the customer.
Even sent request through registered mail id, but it seems no one is their to address the customer complain