New Capitec App forcing account closures

Capitec is changing its cell phone banking app at the end of April, but the new app requires Android 5 and up. Phones older that 3 years will not be able to load the app. The solution? - Bad luck, you'll have to use on-line banking (internet) using a desktop or laptop instead, ... BUT - the Capitec internet banking system requires verification of your log-in process via your cell phone - USING THE CAPITEC BANKING APP WHICH ONLY OPERATES ON PHONES WITH ANDROID 5 OR HIGHER!!! I have been very happy with Capitec's systems in the past, and their service has been great, but it now seems that I have no optio but to move my account to another bank. I have tried visiting a branch and also phoning their client services line, but nobody is able to hellp me. Capitec management should not be blindly following the advice of their programmers - they need to think of the implications (and complications) for customers.