edcon did not cancell contract in time

In july last year igot. an sms asking me to take airtime contract and isigned for six months so it supposed to end in december icalled them to cancel it in november the lady. And she assured me that it was to be cancelled in december. In january they continued giving me airtime of which idont. Want iwent back to the store thet gave me reference number with the promise that they are people who were going to call me in 48.no one ever called me.with the hope that may be if icall edgars customer care iwould get help but there no luck the one who answered my call didnot help me any way he gave number that when idial it ring ring after that it hang up.it seems like edgars is forcing this contract to me iwant my prepaid number back plz .idont need this contract any more .