Disgusting service: Close the credit card properly.

I am quite disgusted with FNB right now. I called earlier, for the umpteenth time regarding a credit card I settled and closed in February, but still appears as active on the bureau. Called the bureau to sort it out, and I was told to contact FNB which I have been doing for the past three months with no luck. I just called again and I was put on hold by MALAZA for a good 20 minutes and eventually, he decided to drop it without getting back to me. What more should I do because your service is truly disgusting right now. This is affecting my credit score negatively.