Refusal to cancel credit card, no contact from fnb.

Can someone please tell me what is going on? I sent emails to 2 representatives requesting they assist with my credit card cancellation. I have heard nothing back from them and it's been 3 days now. I need to get my credit card canceled and no one is assisting. I am not paying the arrears, if you had canceled my credit card on my first request there would be no outstanding balance on the account.

Please sort this out now.