Vodafone India — Vodafone internet

I am being charged for internet even when my data is off and im on WiFi...also the internet only starts coming once my pack has expired...till the time the internet pack is active I hardly get any net...but the moment it expires the net is readily available...this just goes to show that how you are cheating your customers and making money...request get back with a justification at the earliest or else u leave me with no option but to disconnect mine and my families connection and also inform all my friends about it...regards