WORST SERVICE!!!!!

I have been battling to cancel our Business line with Telkom since January 2015!!!! I sent the Cancellation letter with all required documents as specified!!! We are still being billed until April 15! Last month the Bill came and it was fine, nothing charged. Then AGAIN this month, we are billed to a Line we DO NOT use and I sent the Cancellation letter in Jan 2015! It is nearly impossible to get through to the Call Centre (2days minimum) - No Lies!! Telkom really need to come up with alternative solutions. Every consultant I speak to either cant help or give false information like - yes the line has been cancelled. REALLY? then WHY are we still billed? I have sent about 100 emails to this [Email Removed] and NEVER get a response!!! Seriously! I need someone to take responsibility and SORT THIS OUT! I have had it!!!!!!