Vodacom billing me monthly for the last 1.5 years for a sim card that does not work

For more than a 1.5 years now, I have been billed on a Vodacom phone contract but they have failed to get the sim card to work.

Vodacom previously advised that I call the Vodacom call center, I visited the Vodacom shop to make a sim swap but all this has not worked. I have been on the phone with Vodacom for hours and hours. All this has not gained any results.

Can Vodacom please do something? Surely this can no go on for years. And I am still been billed monthly on a sim that is not working. The sim number I am referring to is ********** 443.