Telkom takes 5 months to process a cancellation!!!

I am trying to cancel an Internet 10 x 10 contract. I sent the forms in at the beginning of June and have phoned since and am still waiting for cancellations to phone me to cancel. It took 5 months for them to cancel my cellphone contract - pathetic. I have told them that they had better cancel the Internet contract before the end of the month as I refuse to pay for another month. Is that why they take so long to cancel so they can just keep taking money off you? Inhad a call last week offering me a new contract and I told them I can't cancel what I have so why would I take anything new out. Please help!!!!