Vodacom Screen Insurance Confusion

Hi. After upgrading my contract to the new iPhone, and having declined the handset insurance in store, a call agent called me regarding screen insurance. I was given two price options, the first being R19 a month, and the second being R199 once off. I opted for the second option. I received a confirmation SMS saying that I am covered. Shortly afterwards (two weeks later) I received an SMS saying the insurance has been cancelled. I called *** to query this. No one was able to assist, with many promises to call me back. I have heard nothing in this regard so far. I have now looked at my November / December invoice and see that I am being charged for both the R199 and the R19 per month. This is not what I signed up for, and the voice recording should prove this. Please sort this out ASAP, as I am under the impression that I am covered if something happens to my screen, and do not want any surprises when I need to claim. Also, I confirmed that I wanted the once off R199 payment method. You guys need to get your things in order.