Capitec Bank APP, compatibility issue

Capitec introduced a new APP that is not compatible with my phone Galaxy note S3. Now they have deactivated the APP, I suddenly knew that they are forcing us to but new android phones which we can't even afford. I believe they have a business with these tech giants and they are bringing us on board as part of leverage. I'm so disappointed with the bank. Capitec is literally forcing & trapping us to buy a new phone, we can't afford them and now it's even difficult because we are used to transact using the APPs.