Landline not cancelled after more than a month

<p>I requested cancellation of my landline on 12 April 2017 by sending my cancellation form and copy of my ID to ********** Since then I have no reply to my cancellation request. I also communicated with Telkom via Twitter and was given a reference number (AI ********** ) and asked to resend my cancellation form to ********** but got no response. Today (14 May 2017) I received a bill for another month which I refuse to pay! PLEASE SORT THIS OUT!!!</p>