Vodacom ripping us off

.On 5 Feb 2015 a value added data package was somehow activated. Despite it being cancelled on the a same day shortly afterwards , vodacom went ahead and loaded the account. Now I'm faced with a bill that's nearly 300 more and they say there is nothing they can do. So you all beware as they leave these options on their *111#,number so y 'mistakingly making wrong choices' I ask them to cancel the contract. On 1 Aug 2015 i gave 30 day notice to cancel. I was promused end of Aug last payment will be made. GUESS WHAT. TURNS OUT THAT THEY SAY I HAVE 4 DAYS LEFT IN SEPTEMBER, SO THEY BILL ME AGAIN FOR ANOTHER FULL MONTH. ABD SOMEHOW THE VALUE ADDED SERVICE THATS BEEN CANCELLED EVERY MONTH SINCE FEB JUST FOUND ITS WAY BACK AGAIN ON MY PHONE. EVERYMONTH I CANCEL ONLY TO FIND OUT OUT SOMEONE REINSTATES but my sim card was not even in the phone.SHAME on yo vodacom. You ripping tour loyal customers off. I will close each of my 5 contracts one by one and restore my integrity with my feet . Walking away from Vodacom