Unable to cancel landline

Unable to cancel my landline using the online portal. When I phone Telkom for help they keep forwarding me to another department until I get to the cancellations department where an automated voice message plays telling you to cancel using the online portal. I'm running around in circles here. Can't wait to get away from this company. If anyone from Telkom reads this please let me know if there is anything I can do to finally cancel my Telkom landline.