Vodacom Insurance Cancelation

This is Soooooo Frustrating. In February 2021 I decided there was no need for me to have insurance on one of my contracts as i was down grading the number to a bundle only package. just about every month after that i have had to phone Vodacom to find out why the insurance is not canceled. Every time i am told they can see that it has been canceled but don't know why I'm still been billed and that it will get sorted out. so i wait another month for the next account and sure as the eye can see there is the damn insurance again. so I call again and get told the same thing, Sometimes I'm told that the money that's paid after the insurance is canceled will be refunded but that hasn't happened ether. I have been with Vodacom for over 14 years and i have never had to result in going this far but now i have had enough. This month of July 27th i am only paying the amount that i am owing without the insurance.