Outsated transacting in the 21st century

Old Mutual Banking app is the most frustrating app I have ever used. The help centre is unable to resolve a single problem for the past five months. I've had enough and looking to take my banking somewhere else. Cant read/download my statements and tax certificate 5 months later. Despite having loaded 4 different PDF readers, I get the same error message that "no pdf loaded on device". The solutions suggested in this day and age include go to the branch or phone customer to request a statement. This implies that I must incur costs and consume time unnecessarily while I should just be using my phone