Bad Service

I have tried on numerous occasions to cancel my 8ta internet contract with Telkom. I have emailed and I have gone to the Telkom shop to cancel my account without any success. Melin Potts at Canal Walk said that he would take care of it. He gave me forms to fill in and said that I can email it to him. Since then and other attempts no one from Telkom has confirmed that my account has been closed. I have also noticed that this month's internet access is open for me to use and without doubt I will be charged even though I want cancellation of service. I want my account closed. I am fully paid up and do not want to be charged at the in of December for a service that I don't want.