No one is answering

I cancelled my Cell C subscription and am currently in that month notice period where they keep you hostage and hold you ransom before you can port to an actually proper functioning service provider. I received a statement that indicate that they are still going to bill me even though I cancelled my subscription with their pathetic company. I tried contacting the call centre to get clarity in this regard. After listening for three weeks to the highly inefficient, irritating and waste of time IVR I finally got the option to speak to an agent. As expected from the *********** staff, they pick up the phone but don't speak. All you hear is how they have one massive party in the background. So if someone that is actually still working today please give me a call to clarify this erroneous billing I will highly appreciate it!