Vodacom adds an insurance product to my account WITHOUT AUTHORISATION!

Vodacom added an insurance product on my July 2020 invoice that I DID NOT authorize . I chatted online with a consultant who said I requested this product on the 27th June. I have paid R35 insurance on this phone for the past two years and then all of a sudden when the device payments are due to end , a mysterious R255 extra for insurance is added to my account. I requested immediate removal of this as there is no authorization for this yet all the consultant says is to speak to insurance department . I am cancelling your debit order Vodacom. When you want your money you can call me for you blatant dishonest And ********** operations - ****** ******* !