Vodacom insurance

Around the 20th December, I called Vodacom insurance company to request that the insurance on my profile be removed, this is after I enquired to find out which phone was insured and I requested that the insurance be cancelled as I no lomger have that phone, the insured device was my old phone, the lady I spoke to said it was cancelled, however end of December I was charged for the imsurance again and I see it’s still appearing on this months billing again, I need this to be cancelled ASAP, I cannot continue paying for a phone I no longer have, and worst part is I called in and rewuested for it to be cancelled, this would be the second payment towards somethimg I had cancelled