vodacom Fabricating outstanding fees

cancelled my contract in September 2024, because the tower near my home had not been in operation for more than 12 months. complaints fell on deaf ears. the customer service guy lost his temper because i did not want to get a new contract. after the last payment vodacom owed me R7, but 9 months later i am now on "final demand" for an outstanding amount. you cant get hold of the customer service, emails get ignored, go to a vodacom shop and you don't exist on the system. HOW are they manufacturing outstanding debt!!!