Cancellations impossible

We have been trying to cancel our unused telkom lines but everyone gives us the run around. I went to the telkom store at College square on 12 November 2015. Upon arrival at the store i was told they cant do cancellations in store?? so they gave me a cancelation form told me to attach company letterhead and list of lines i would like cancelled and email it to [Email Removed] then i would receive a reply back stating it was processed for the 30day notice period where after it would be cancelled. i never received a reply. After calling the call centre on numerous occations they cant help with cancellations either and i should wait out the 30days. Our account runs about R65 000 per month. Some of these lines we have been trying to cancel for the third time. I called the 10217 accounts department again. they now tell me i used the worn email address and i should send the cancellation to [Email Removed] because its a business account. Why cant i just talk to someone that can help me directly. so i can get written confirmation that these lines are cancelled. Everyone at Telkom just gives us a runaround meanwhile they keep collecting.