Paying after Cancelling our contract

We cancelled our Telkom Mobile contract at the Woodlands Telkom branch in May 2015. <br> All the necessary procedures were followed and forms were filled in accordingly, lastly we were assured that everything is now in order for our contract to be cancelled.<br> To date we have been paying monthly (debit order) and when we follow-up Telkom refers that they have never received our cancellation form (which was handed in at the branch) and therefor our contract continues. Apparently we were suppose to receive a confirmation from the cancellations department within 3 days - first we heard of this. <br> We especially made the effort to go to the branch, no one informed us on the day that we should expect confirmation from the relevant department and no one takes responsibility for us having to pay for a service which we do not use anymore.<br> <br>