NEDBANK APP ISSUES

Hi there I am experiencing some issues with Nedbank it was plain sailing for about a year or so till they introduced the money app. I then downloaded the app and started banking till I was offered a cell contracted which gave me the option to port my number from cellc to Vodacom. Now I understand that there are security protocols put in place with regards to sim ***** etc I get that. I am office bound and my shift ends at 4pm daily I will never make it to the bank in time. We are short staffed so I cannot sneak away. I tried loggin in on the internet but the lady told me some story about me not being able to do banking on there if she resets my info I have to go into a branch bearing in mind I just told her I am unable to. If I call your call Centre and you verify that I am me why do you need me to go into a branch to have my number removed and replaced on the system? I also on the 29 Jan 2019 I called, explained my story was put through to two departments and was assured the app technical department will call me back the same day after having fixed the issue this did not happen at all.