Settled my account months ago and still being debited!!!!!!!!!

I cancelled my account before moving abroad. After paying the cancellation fee and emailing the relevant documentation. I still see my account be account being debited. I have not been able to contact Telkom from the UK , The telephone numbers don't work abroad. I have used their online chat service and facebook to ask for help but all I get is promises and no follow through. Why after paying the lump sum cancellation are they still deducting money off my account. This is really pathetic service. They already acknowledged their poor service and apologised and still taking money from me for a service I have not used in months. DAY LIGHT *******. Be warned people do not subscribe to Telkom you will regret it.