Discovery credit card hysteria!

I have been with DISCOVERY HEALTH for MANY years. I belong to vitality and I have a Discovery credit card which was issued through FNB Bank. Discovery have decided to open their own bank and have changed banking details obviously. I tried to download their app without success. I tried to pay my credit card balance of R150 which was rejected. A week later I was sent a rude message saying my account was on hold. My card is blocked. I have NEVER defaulted. I telephoned for assistance as per sms instruction. The reception was disgusting. I am sure the assistant was working from home. I spent 35 minutes trying to get through a second time. When I eventually had my call answered, I was greeted very unprofessionally, I was not helped and the assistant put the telephone down on me. I am HIGHLY DISGUSTED with the UNPROFESSIONAL behavior of Discovery credit card/bank/ whoever. We are not all IT specialists and many of us DO NOT have access to scanners, copiers etc in order to set up the new app. NOONE telephoned me to try yo assist or help when I was unable to pay my R150 bill - which was due to their lack of assistance. The whole experience has been extremely inconvenient and frustrating. One would think such a big corporate company who make so much money could be a little more understanding with their clients.