Telkom not cancelling contracts

Totally disgusted in Telkom now, cancelled my contract on the 30th of August from the 6th of September 2024 as we waited for a new Open Serve line, new line was installed on the 2nd of September so called again on the 3rd to ask that it be cancelled on that day. Was told they are offline but will put the request through. Received an invoice now for the full month still, phoned billing and was told it was never cancelled need to cancel it again. Phoned today the 26th of September almost a month later and was told again sorry cannot cancel it as we are again offline. How do you cancel something with them when they are always offline and for a service that does not exist as the line was off. If anyone from Telkom want to contact me the account number is *** as now I have to pay for two contracts this month.