Two months to cancel ADSl line ???

Good day, <br> I emailed a cancellation form on 18 February 2016 to cancel my ADSL line only. I called again two weeks ago to confirm, only to find out it has not been logged. The lady said she would log it, we emailed it directly to her, and still no response. I just sent a follow up email with no response either. <br> <br> I will not pay my latest bill that is due, as it should have been cancelled already.<br> <br> We are also still waiting for Wifi System to be installed, this has also been about two weeks, seriously ?????<br>