Trying to cancel but they keep on billing me

Summary of events: • September 2025: I cancelled my account telephonically and was advised that, as it is month-to-month, cancellation would be processed. I was given a reference number. • October 2025: I was still billed. I was informed the previous reference was only a “ticket number.” And the person said I do not have proof that the previous person said that I did not even have to phone in to cancel. A new reference number was issued. I threw away the previous number as they said it was the wrong number. • November 2025: I received another invoice. I was told again that the previous reference was incorrect and another number was issued. I again threw away the previous number as they said it was the wrong number. • 11 December 2025: I was informed that the cancellation had never been processed. I was told it would now be cancelled and that I would receive a final invoice. *** • 18 December 2025: No action had been taken. I received another ticket number: ***5. • January 2026: I received yet another invoice. I spoke to Sinenhlanhla Biyela, who indicated that a third party was responsible for the delay. She contacted them while I was on the line and processed the cancellation. *** Case number: ***1 • February 2026: I have received another invoice. Still not a final statement. (please see below). Despite all of the above, I have still not received a final invoice, and I continue to receive billing statements. I cancelled this service in September 2025 because I can no longer afford it. The WiFi has been unplugged and unused for months. I cannot continue being billed for a service I cancelled repeatedly and am not using.