Discovery Bank complaint

My credit card has been migrated to Discovery Bank from Discovery Credit Card. I do not want a credit card from Discovery Bank, but have found it impossible to cancel this credit card and pay off the small balance due. Disocvery Credit CArd say it is not their problem, phone Discovery Bank. Discovery Bank phone answering robot does not recognise my date of birth and therefore I cannot go further. I tried downloading Discovery Bank app, but it says I am already registered (I am have Discovery Medical Aid). However, I am completely unable to contact anyone at Discovery Bank - the 'behavioural' bank. I would be delighted to have contact from this bank to sort this problem, which I am more than willing to do. Contact me please.