British Airways Credit Card Division of ABSA are out of their depth

I have a British Airways Credit Card (ABSA). I settled it on the 14th March, called on the 15th and requested it be closed. I was told that it will take 3 days and that someone would call me. Nothing happened. I then called on the 20th and they had know knowledge of my request to cancel. They logged it again and said that it will take 3 days. Surprise Surprise! Its now the 27th (7 days later) and my card is still active. I find it absolutely pathetic , especially since i could cancel my ABSA platinum card directly on the line with a consultant. Why is the British Airways branding of ABSA so incredibly inept that they cannot attend to a cancellation. I want my card cancelled and a letter stating that it is closed asap as i am now tired of waiting and ABSA are holding me back and costing my money for another application that i am busy with. Unacceptable.