Telkom *****s us again

Since February this year I have been trying to cancel our adsl line. I have phined umpteen times, been on hold until my phone batteries have died. On getting through ive been given various email addresses to apply to for forms. None are correct and bounced back. We installed fibre on 9th February and have been trying to give our 1 month notice since then. Why can't they just send the forms to us? We can apply for new services over the phone but cant request cancellation forms? Ill be so happy to be rud if telkom finally. My only alternative is to not pay and let them cut me off.