Vodacom's incompetency

Vodacoms rule is 1 month before for cancellation. My account wassupposed to end on 31 December 2023. I phoned and cancelled on the 3 November 2023. To my surprise I got charged. I phoned on the 1 December and I was told it would be sorted out within 72 hours and the money reversed. End of December again I got charged. Again for the 3rd time I phoned 8th January 2024 and again I was told 72 hours and money will be reversed. It is still not cancelled and has affected my clear score all because of Vodacoms incompetenecy.