ZERO Response trying Cancel Service - Email addressses INCORRECT

I have been attempting to cancel my service for more than TWO MONTHS. I have FAXED, PHONED and VISITED a Telkom Office in Claremont, and I have received no confirmation of cancellation of service and still am getting invoices. Email addresses supp**** by TELKOM appear inoperative and emails bounce back as undelivered.

The account is on Landline **********

I have screenshots of the failed email addresses