Credit card UN-user friendly, terrible online log in systems!

Ever since the Discovery Credit Card moved away from FNB (when Discovery started their own bank) the service received on this credit card is absolutely THE worst! It was so much easier to manage my card when still linked to FNB. I cannot seem to log in to the online banking to manage my card, I cannot log in to the app they want you to download. I struggle to make online purchases, it says the card number is not valid, but everything is correct on my side. Their back end systems seem to be atrocious- they have my husband's ID number linked to my card for some reason, I have been trying all morning to access my credit card details, have phoned the call centre- to absolutely no avail.

It is so un-user friendly and difficult to use, I wish I could just close this card and never look back! If you don't have an account with them, do yourself a favour and stay away!