STILL PAYING WHEN CONTRACTWAS CANCELLED

Hi, <br> <br> I have called Vodacom on more than 1 occasion and that's to Cancel a contract that has expired! <br> <br> Now - I have been paying them for the past 4 months, and have tried to cancel payment but was then taken to ICT and received a bad payer! When I do get through I am told they will cancel immediately...alternatively, I have the phone put down on me!<br> <br> What can I do to cancel a contract that has expired and to stop this payment!