Capitec mobile banking App

Capitec's banking app is useless!! For the past month it doesn't operate efficiently!! I would go on the app on my phone and all is well until I go into the app for a 2nd time int the same timeframe to do transactions and it would prompt me to restart the app!! DO NOT tell me to delete the "old" app and download the app again as one of the consultants claimed when I phoned in, because I did that and the same occurs!! I am fed up and frustrated and it's left me quite embarrassed and very frustrated a few times at shopping tills!! Fix your app!!! It might be some bug in your algorithm system or something. Whatever it is fix it as I won't think twice to change banks.