MAKRO ACCOUNT PAID UP - NOT CLOSED YET

On 23 December 2015, I phoned Makro/RCS accounts division to get a settlement quote to settle my account and have it closed. I was given the amount to pay, and was instructed to send through a letter that I want to close my account with a copy of my ID. Initially I was not given a timeframe on how long it will take to close the account. I paid the settlement amount on 23 December and sent through the letter on the same day. I phoned on 28 December to find out if my payment reflects, only to find out that it does not reflect as yet and that a debit order (my monhtly payment) will go off my account. I told the lady I spoke to that I will reverse this if it happens, but luckily it did not go off, she also said that they did not receive my email to close my account and gave me another email address to send it to, which I did. Today I received a statement for February that I owe Makro R74.83, but my card is suspended for further purchases, so tell me WHY IS MY ACCOUNT NOT CLOSED AND WHY DO I OWE MAKRO MONEY AFTER I DID PAY THE SETTLEMENT AND DID ALL I SHOULD'VE DONE TO CLOSE MY ACCOUNT?? I WILL NOT PAY ANYTHING!