Cancellation not processed as discussed

on the 08/02/2016 I called the above department to request for cancellation of my contract. I was given the following reference: 1 - *** stating that my contract will be cancelled on the 29/02/2016. I was told to turn my cellphone off at night and turn it on the next morning. The number would be converted to prepaid the next day. This did not happen. The normal debit went through. I waited again this month on the 31st and still my contract was not cancelled and I was debited again. This is frustrating as I was told that my contract would end by Feb and now I am paying for something which I cancelled. this is unacceptable. I want my monies refunded due to breach of contract on your side. Totally dissatisfied!!!