Vodacom lack of consistency

I wanted to cancel a contract and move it to pay as you go and was told if I cancel it a few months earlier is would be a big settlement amount. So a few weeks ago I phoned to see if I can cancel it at the end of March. The consultant said I can and I will only have to pay in R180. When I went to cancel it today, the vodacom shop said I must phone customers care. I did this only for the consultant to tell me I will have to pay for this month again. And then I was transferred to the accounts department who told me I will be paying till end of May. This is totally unacceptable as all consultants have other stories to tell me