refuse to pay money back

August 2012 i had opened a contract with vodacom at vodacom shop in sunvalley. the contract was for two years. It expired in October 2014 but vodacom still took payment. I was not notified about that i needed to cancel the expired contract.<br> when i called them they said i was suppose to cancel the account and that its my fault and they not refunding me cause its not their problem. There is no such thing in my contract stating that i need to call to cancel when my contract ends.<br> after cancelling they said they will still take payment this month even though it is cancelled.<br> thank you<br> <br>