Changing of cell phone number not done twice

Last month I visited the O R Tambo branch on the 25th September to change my cellphone number for all banking transaction but mainly the number where I receive my OTP, that was not done the change was only done for my notifications to the new number. Yesterday I went to Tembisa to request the same thing and was advised the changes have been done and that the new number will work overnight. I am trying to do a transaction now and the OTP is still going to my old number that is not longer in service. I am frustrated as i was at the Tembisa branch for over 45 minute waiting at the Enquiries queue and once for Standard Bank not to fulfil on promises made. I have to make a payment for a deposit for a lease and if I dont pay today I might loose the deal.

PLEASE CAN I GET THIS SORTED ASAP as i refuse to go to any of your branches!!! This is pathetic service.