Non Existent Customer Service

I have an American Express card with Nedbank. I lost my job during the pandemic, lived off the credit card and it had gone into arrears. Currently I am catching up with my debt as I have only been employed again for a year. Nedbank Never sent me statements or made any contact with me regarding the arrears, I also can’t access my account. I have phoned. I have visited the branches. I have emailed. No response. No help. Out of nowhere I receive an email from debt collectors/lawyers regarding the account, which I now have even more debt in fees that I need to cover as well. Absolutely disgusting treatment. Once my arrears are paid in full I am sure to cancel all ties with Nedbank. Zero client support and appalling customer service.