Be careful of Vodacom Call Centres

Got a call from a call centre lady telling me that my cell phone call usage was a little higher for the month and that if I changed my contract from Smart S to Smart L, the subscription would remain same but I could make more calls which suited me perfectly. I was amazed to discover when I received my first account that my subscription, which was R529 had jumped to R891 !!!!<br> The call was recorded but try getting a copy out of Vodacom !