Cancellation of Telkom Landline

I cancelled my telkom landline more than 3 months ago and yet it has not been cancelled. I went into the store and filled out a form. The lady behind the desk said that it will take 1 month to cancel. I am still paying for a service I have cancelled 3 months ago and still haven't received my refund. I am very upset, because everytime I call into the call centre, my calls go unanswered, I have emailed you guys using the contact form on your website and still no response. I have attempted to utilize your live chat and that too is a useless communication tool.<br> <br> Please help!