Banking app nightmare

I need my banking app work ASAP. I opened a business account last week, I can’t access the banking app, I’ve called your call centre, I’m being sent from pillar to post, I went into the branch at Maponya mall and wasn’t given a workable solution all I was told is that the system won’t take my number and that I must buy a new phone which really isn’t an option nor is that a solution. I need someone to help me to get this in contact registration done and successfully get the app working or close the account so I can move my business account to a different bank because this has been a very frustrating experience I am not happy at all.