Canara Bank — requesting

I wanted to change my registered mobile number as i lost my previous number and otp was going to my old number. I went to the bank and applied for updation of registered mob number. But surprisingly it got updated only for sms services, not for otp which is the important one. My transactions are pending for months as this one is my primary account. Now, i get atm withdrawal smss and balance etc. That's it. So, i visited the bank several times, wrote application again and again, made them check the status, only for this but no use..! I called customer care and they told me to go to bank and tell them to delete my old number from the server and all. I did that but bank official deosnt understand. Customer care official told me to send e-mail complaints too, to some id's. I did that too, but no reply...! I still get the transaaction web page where it shows otp has been sent to my old number. I was having problem with my internet banking service (Which is another story), so i was adjusting with my mobile banking, and now i am stuck as i cant recieve otp at all. I am really upset as there is a lots of things pending. I want my number changed asap.