Cancelled Service in September. Service not cancelled and still being billed

I cancelled my account September 2017.

I phoned Telkom that same week to confirm cancellation upon which I was told Telkom is unable to confirm this.

I emailed ********** with all required details on the 15th December 2017 to keep record of my interaction, the consultant didn't even bother to respond, after supplying her email address on the chat, explaining she would escalate.

I phoned a month later to check cancellation of the line to discover that the line had not been cancelled.

In the interim I keep receiving an invoice for the line I have cancelled.

I called Telkom today, explained the situation, and email prior conversation to Zinhle at Telkom. I was then informed TODAY the line was not cancelled by suspended and I am liable for the bill?

Apparently I was told TODAY, i must complete a form? 5 online chats, 7 emails, 3 telephone calls and not one mention of a form.

I am at a loss at what else to do.

Best Regards J Kermis