Paying for a service I cancelled two months ago

I cancelled my service on the first of February 2016. I am unable to get through to the call center as I don't have airtime to be on hold for 30 minutes +.<br> <br> I tried to chat to a consultant on the Telkom website but I was disconnected before we could resolve my issue.<br> <br> I am a student and I can't afford to pay for a service that I don't use i don't even live at the place anymore.<br> <br> I really need a refund for the months that is should have been cancelled.<br> <br> Please help...