Cancellations/Billing *****-up

On January 29 2015 I called MTN to cancel my contract that is set to expire the end of Jan 2015, the person at MTN direct told me It can only be cancelled the 19th of February 2015 as the Billing cycle is from the 20th to the 20th every month. So I did that and my contract was cancelled immediately and the person responsible assured me that the debit order will not go of the end of February(That was a lie) and also lost all the airtime I had.<br> However this morning 3/02/2015 The old debit order still went off.<br> I hereby request MTN to refund me withing 24 hours, or else I will just go and reverse my debit order.<br> <br> Reference number ***