Standard Bank - Completely ***********

I have had to change my cellphone number. In order to update my records with Standard Bank, I phoned them and was told I could only do so by visiting the branch. As there is no branch where I live, I travelled 40km to the nearest branch. They updated my profile and I am receiving sms messages, however they still have the old cellphone number for sending one time pin numbers when I want to use my internet banking. On phoning today, I am now advised that I must go back to the branch and Standard Bank are not prepared to sort this out over the phone. It amazes me that I can do everything else via internet, including changing the payment limit on my account, but Standard Bank are unable to change something as simple as my cellphone number - even after I have been into the branch. I therefore have to ask myself, is this Treating Customers Fairly? And this is supposed to be one of the top four banks in South Africa!