Frustrating Wi-Fi Cancellation Experience

I've been calling since Friday to try to cancel my Wi-Fi account since I now have a Vodacom fibre account. I have been sent from Pillar to post. On Monday, I made my last call using the number ***. I was told I have an M2 account ***), and a lady named Fiona would call me to facilitate the cancellation request. That still hasn't happened. As I have made every effort to provide the required notice for cancellation, any attempts to deduct money after the contract ends will be reversed.