App Activation

I opened a standard bank account online and collected my card at their Braamfontein branch yesterday . Activated cellphone banking service and downloaded the app but couldn't register because it kept on telling me that "one of the values is not unique". I then reached out to them on their Twitter account for help they took my number and told me a consultant will call me. Today I decided to go to the branch and they failed dismally!!! They couldn't even tell me what was wrong, they tried resetting my password but failed, I even ran out of data trying to fix the issue with no luck, bought data and kept trying but still nothing. I left the branch without an activated app.