Telkom makes you pay for months after cancelling your account

I am so frustrated with Telkom, after cancelling my fixed line account with them on the 27th of September 2018, I have just received yet another bill from them for R217.89. My account still says the cancellation is pending, after having cancelled it almost 3 months ago. I am now expected to pay for a service in South Africa which I am not using, as I do not even live in South Africa anymore. Telkom get you act together. This is unacceptable!