Discovery bank credit card cancellation

Good day

Since systems were changed at this bank and you no longer can access your statements via the Vitality app, my problems started. I cancelled this card on 20 July 2020. To date heard nothing from this bank. I have send mails, phoned empty promises that they will call back. Reference numbers are send but not one responds.(***) I save money in my card. there were ±R805 in my card. It is all gone now and they deducted R191.00 from my account last month. I reversed the debit order as Discovery did not come back to me. I requested a detailed statement - till today - no respond. I did not buy anything on this card. The app requires one to take a selfie to be able to use it. I have tried how many times and still I can not register the account. Phoned this morning again 12 August 2020 - no answer.

Please help me to cancel this card immediately. I will not recommend Discovery bank to anyone.

Thank you

H Botha