Cancellation

I have e-mailed Vodacom on 30 September 2015 requesting them to CANCEL my iburst subscription that I took out with them a couple of years back. I also requested help on FACEBOOK. Too date, no one had the courtesy of giving this matter attention. Finally decised to phone today. After wasting 20 minutes on the phone with them, no one could assist as no one knows what to do! Have to call Iburst. I already told the last consultant that I did not take the contact out with Iburst directly but with them. Phoned Iburst, they DO NOT DEAL WITH THE ACCOUNTS VODACOM HAS TO CANCEL THE ACCOUNT! WHAT NOW???? I am now going to pay for another month that I am not using the device at ALL and VODACOM REFUSES TO ASSIST AND CANCEL THE CONTRACT!!!!! SICK AND TIRED OF VODACOM!!!! THEY ARE QUICKLY TO TAKE YOUR MONEY, BUT SLOW TO DELIVER ANY SERVICE!!!!!