Stop charging me for nothing.

I just spent 13 minutes on hold trying to cancel my contract, which already ended a few months ago. This is something I was not made aware that I should do after I payed my contract finished. <br> <br> After a call that was not correctly helped (Nobody helped me yet they asked for a service rating before hanging up) I was transferred three times to no avail, I don't have a cell c sim anymore so i payed standard rates for this waste of time!<br> <br> Will I be refunded for the amounts coming off monthly?<br> <br> Who knows.<br> <br> Very upset. All I want is my cell c contract to be stopped.<br> <br>