Cannot make simple changes to profile

This year (2018), I have attempted to change my cellphone number with Standardbank on numerous occasions. I first went into the branch in about June and filled in all the relevant information for them to change it for nothing to happen, I then went in again about 4-5 weeks later and filled out the same forms again. This time, the myUpdates profile was updated and I started to receive notifications on my new number, my OTP’s were still being sent to the old number. I then addressed this telephonically with much annoyance and the issue was resolved. About 4 weeks ago, I decided to sign up to Standard Bank’s UCount reward program, only to find out I was being blocked by my old number again. I then went into the Eastgate branch to change this number about 2 or 3 weeks ago and was assured the change would be in affect in 7 working days. Today (05/12/2018), I phoned UCount to finalise my registration and activate my card only to find out that the new number has still not been loaded. This is absolutely unacceptable as it’s been almost 6 months since I first went in to update my number. This service is poor and tiresome and has resulted in endless amounts of frustration with Standard Bank.