Discovery Bank App

A week ago I opened a Discovery Bank savings account telephonically and received my bank card from DSV. I thought everything was fine until I had to log onto the bank app to view my bank account details. The bank app does not open, as a result I am unable to use this bank account. I have uninstalled and reinstalled the app numerous times with no success of viewing my bank account. I have called the customer care line for assistance, however I did not receive satisfactory assistance. As a result of my frustration I requested the consultant who was trying to assist me to open a complaint case. Its been over 48 hours I still have not received feedback nor a simple confirmation to advise that the case is been looked at. As a new Discovery Bank client, I am extremely disappointed and frustrated by the poor service. May I request that Discovery Bank contacts me urgently as I would like to transact on this bank account.