Change to wrong package and not responding

After a complaint on Hello Peter about the wrong upgrade by Vodacom,, I received a call from Candice promising to fix the problem.<br> I was changed from one package to the other . This change is supposed to cost the same. Yet, to my surprise, when I received my account via E-mail, I found that I am now charged R1500 per month and not the R500 per month as according to the 10Gig deal as advertised.<br> I sent Candice a mail, but after a week, there is still no response.