SECURITY CHECKS

I recently changed my cell phone number and i went to the polokwane branch to update.I thought all was good until today when i tried making online transfare. The.The online transfare feature has to send OTP(one time pin) which has to be sent to a cell phone number to my suprice it is sending to the old number.I decided to call the call center to do the update over the phone .I understand that security checks must be done and i answered all the required questions correctly.The agent advised me that there is something i didn't answer correctly and she could not do the update .I KNOW MY ADDRESS.I KNOW THE ACCOUNTS I HAVE.I KNOW MY ID NUMBER.NOW I HAVE TO GO TO THE STUPID BRANCH ONLY TO STAND IN LINE TO CHANGE CELL NUMBER AGAIN!!! THIS SUCKS<br> and was given reff *** to rate their service.