Vodacom adds insurance to contract without my concern

I am really disappointed in Vodacom, i was debited R760 for my R380 contract phone. When i called to enquire why they debitted so much i was told i took insurance for the device and i did no such. Palesa from the insurance devision said it would take over 30 days to find out how the insurance was signed up or even more days because they have a backlock.

M assuming many people have been ****med through this insurance if a backlock backs over 30 days to review.

I really need my money and consultant did not seem bothered.