FNB Credit Card Cancellation

Seeing that in the past two years, I have had one positive experience with FNB, I want to recommend them to make this their helpdesk, as it is the only time they bother to put urgency on your complaint. So recently I decided to pay off my credit card and close it for good. Sent an email to *** and received no reply. After 3 days I phoned them which they sent me a form that must be filled in. I did this and sent it to them. 3-4 days later they rep****, stating that I still owe 290 odd on the card and they will not close it until it has been settled. Logged into my online bank, saw that the amount owed was 0.00. Took a screenshot and sent it to them as I wanted to know how they got to this? Another day or two went by and they rep**** saying it was a transaction of 90 rand odd that I owed and gave me the transaction ID as well. Again logged into my online banking, saw that that transaction has been settled long before their email. Took a screenshot of this and sent it to them again. No response as of yet so I decided to phone them yesterday. I was told that they do not have access to the case notes but can see that it has been resolved and that the account would be closed yesterday. Surprise surprise, it is still open. It really seems like FNB is frantically looking for reasons to not close my account and keep me paying unnecessary account fees. This is really horrible. My advice to anyone wanting to get a credit card from FNB, don't. Just go somewhere where someone is willing to assist you and not looking to drain money out of you even if you requested the service to be stopped. I requested this to be cancelled way back when and they purposefully keep stalling this in order to milk me some more. They are worsening my financial situation.