Vodacom ripped me off and now ignoring me

I took out a new contract recently. I opted for a package which included R175. As the contract was R350 and i paid around R150 - R200 in prepaid monthly anyway, it was good value. I also decided to add a watch. The contract was for 36 months, and the consultant at Waterstone branch advised that if i increase from the R550 total to around R680, it would become 24 months. Sounded good. Signed up. However, after the 1st of the month, i noticed that i did not get my airtime, as the contract was signed up on a different package. Additionally, insurance was added, which i explicitly declined. I have been trying to get hold of the consultant for 4 weeks (read again, FOUR WEEKS) without return call, or a i get voicemail, and twice it was answered and then dropped. So clearly Viviene is aware of what was done.

This is an example of how companies like Vodacom take advantage of customers, and in return make it impossible to rectify. Additionally, my previous review was "template answered", but no contact was made and it was mostly ignored.