Still charging me after canceled contract

This is really pathetic. I canceled my contract at the Vodacom store N1 city on 5 June 2015. I had to ask Daniel for confirmation and he said he can make me a copy of the cancellation request. I then asked him to confirm when the last payment is and I was told one more payment at the end of the month. <br> <br> I was charged TWICE (29 June and 27 July) and when contacting the Vocadom customer care they are signing a different song saying that I'm supposed to be charged twice after canceling my contract!!! So why do your colleague working at the store provide customer invalid information.<br> <br> I want my money back and I no longer want to be charged by you people!!!!!