Surprise vodacom data bundle

<p>For the 2nd month in a row vodacom is charging me money for a data bundle that i did not buy, seems like they add services to increase turnover as it suits them.Cant seem to stop it either , i looked all over but cant find a way to stop it.The data is also useless as it dissapears from the phone as soon as it arrives, i have a adsl line at home and dont use much data on that specific number. Can vodacom please show me on paper where did i subscribe to the data bundle and a detailed breakdown of where the data was used , name of site visited, duration at site, upload and download detail.</p>