Still being debited for a cancelled data contract

I cancelled my data contract with Cell C on the 23rd of December 2012 as advised by the contact centre. I received confirmation that it was cancelled. Was concerning to me that at that point the contract could not be located on the Cell C sytem, although monthly debits went through my account. After spending hours on the phone at my own cost, they confirmed that the contract will be removed after it expires on 23 Jan 2015<br> <br> I realised yesterday that they are to date still continoued with the debit order since expiry. When I phoned the call centre to raise this complaint, I was told that they will submit the request again - and obviously no attempt to get a manager etc to assist (Reference ***- Siya 14:40) I again phoned after work and spoke to Bridget - 17:08 reference number ***. After I insited that they pull the call recording for the day I contacted to cancel, she confirmed that the she can see I requested the cancellation and that now the request must go to accounts and that they will refunded the money. My original contract was R149 and since Feb this was also increased to R279 what makes matters even worst! R1116 MUST BE REFUNDED IMMIDIATELY.