Banking App not working - Shocking Service

We are since years a member with Discovery Medical Aid and joined Discovery Bank. There is no other option to use Discover Bank benefits without using the Banking App. The banking app does not allow us to sign up as a new or existing customer. Several attempts to create a username/password failed. Our current login details can not be used on the banking app. We have made numerous phone calls to the Discovery hoteline. I logged a return/service call without response (appararently to many incoming calls). The operators are not equipped to solve technical issues, emails not answered. The service is shocking. Problem still not solved! 😡