Unable to update details due to faulty app

<p>I downloaded the fnb banking app a few months ago.it worked fine at the time.a few days ago the app stated no Internet connection.I deleted and reinstalled but to no avail.on Friday I called the call centre for help.the lady was pleasant and tried to assist but the verification questions she asked were a bit confusing to the extent that she did not even understand them.this resulted in a failed verification.all I wanted to do was update my cellphone number on record and for incontact.why is it so difficult?I understand that security is put in place for my and the banks safety but the faulty app is not my problem.now it's monthend and I need to make payments but can't even login.I can't take time off to go to the bank and wait in the queues there.I am with fnb now for 4 to 5 years and rarely have a problem but this is annoying....a faulty app making life difficult for me. private bankers can't help me either.I left a few messages for a callback on Friday morning but no reply.my old cell number is no longer in use but otps get sent there and i cannot access it.I just want this sorted out...how difficult can it be really!</p>