Unhappy customer with 40gig data deal

I am totally appalled by the service I just received from Vodacom. Firstly I have 2 contracts and a prepaid phone with them. So a telemarketer calls me last week Friday to offer me this data deal, 20 gigs day and 20 gigs night for only R199 per month. Obviously this sounds amazing as I am paying R149 for a gig at the moment and I end up buying 2 to 3 gigs for a month so this deal sounds amazing. I was informed that this was a sim only deal which I was happy with. The selling point for me in this deal was the fact that I could transfer data to 5 other vodacom numbers by dialing *135#. So today I tried activating this new product that I have signed up for and I am told that I can't transfer data to other vodacom numbers because it has to be transferred to the same package deal only which they failed to mention when I signed up. The consultant then tells me that I am within the cooling off period and that they are aware of this problem so he wouldn't have to go check the recording to cancel the deal. He tells me that I can through the sim card away and he will cancel the deal, end of story. I am highly disappointed at this stage as i was all to excited about this fantastic offer which would of been of a great benefit to have. I would of been happy if they at least came up with an alternative solution but instead I was told to through the sim in the bin and end of story. Vodacom please look into the agencies you get to do your telemarketing and ensure that your loyal existing customers are kept happy.