African bank refuses to close credit card account

I requested a settlement letter and paid up my credit card in December 2015. I called the call center to request that the card should be cancelled. I was told by the agent that I would have to wait until the amount I paid shows on their records. <br> <br> On 6th January 2016 I called again and requested that the card should be cancelled (Ref: ***). I was told that a request has been submitted and I have an sms to prove that. it was supposed to take 5 working days and should have been resolved by 14/01/16. Instead the card hasn't been cancelled and I received an sms on 25/01/16 to say that I should pay an installment on my account. I don't understand what I am paying for since I requested cancellation of the card and it should have been cancelled by now. I cant risk tarnishing my credit record because of your employees incompetence.<br> <br> Does it have to be so difficult to cancel a credit card that I am no longer using when it was so easy for you to debit money out of my account? Your call center agents are useless. Each time I have call I get a different answer which has not solved my problem. <br> <br> This is definitely the 1st and last time I deal with African Bank. <br> <br> <br>