Consumer Redressal

I got vodafone prepaid number on 17th June 2013.On 14th November, I converted prepaid to postpaid on constant push by the Vodafone salesperson. It has not even been a month since this service that I am being overcharged on my bill amount. I have prescribed to a plan of Rs 399 rental, which includes 399 local minutes + 200 STD minutes and 1GB 3G data in it. Now they have charged me for 21 international messages, which I never sent. There are no such messages sent out of my phone. I request you look into this matter as this is a very serious issue of false promise and now when I\'m trying to get the details of my bill, they are denying to provide me with it. I am fed up with Vodafone service and would like to discontinue it. But now their policy says that I can discontinue only after 3 months of use. Why should I pay for another 2 months?? The customer care person was not ready to help saying that \"You are inaudible\". When we pay, is this the kind of treatment we deserve?