Going around in circles for App Support

Old Mutual now sends your annual tax statements to you via their online app. I tried registering for this with my generic username and a password and received a message saying I am already registered. I cannot recall registering previously, so tried the same generic username and a possible password. I now received a message saying that the password or username was incorrect. I used the facility to request username and password, and then got an error message indicating I am not a registered user. So this has taken me full circle (1), without the ability to register or refresh my username and password. So I then tried calling the number indicated for online support and on two occasions on Friday held on (over 6 minutes the first time and over 15 minutes the second time) with the call dropping for no reason. I decided to send an email today to *** and received an automated response with reference number APPS***8. The message in the email indicated that if I wanted assistance with login issues, I can only do so via the call centre, so I have gone full circle (2) again. I tried calling the call centre again thereafter, and guess what? After holding on for 7 minutes, the call dropped again. How ironic that Old Mutual plays a recorded message saying that they know how important my time is and request my patience whilst holding on. Come on Old Mutual - get you house in order and provide first class service, and don't use Covid as an excuse. Can you urgently get someone to call me to assist or should I be taking my business elsewhere?