Contract ended impossible to cancel

Telkom contract ended on the 1 August 2015, Telkom advise us to google the cancelation form on their website to cancel. we send the form and received the acknowledgement after 3 weeks, and they inform us that someone will contact us. After a week without a call we contacted Telkom and they advise u that we should go to their nearest branch to cancel. My dad went to Middelburg branch and they told him that they are not responsible for the cancelation and we should contact head office. which we did and i was put on hold for 20mins and spoke to the supervisor by the name of Zanele still no help, she said query was logged and we should wait for the call. till today no call and money will be going off the account end of the month.