I have a Vodacom contract for Mygig 1 for use on my ex-wife's laptop. I received an account for 1.446Gig for the month of March 2014, and on enquiring, discovered that the April 1 Gig was used up in 7 days, despite my ex-wife declaring that she seldom uses the computer with dongle as she hates Win 7. All she normally downloads is a few emails and has a look at her Facebook page, she normally uses her i-phone for most of her emails and FB visits. How is it possible for someone else to access her cell no and download enormous quantities when the computer is turned off and the dongle not plugged in or connected??