NetZero review: Ripped Off

I told the agent January 8, 2015 that I needed internet service for school use. She asked if I would use a laptop. She said 2000 megabytes would be fine for school classes. I received the NetZero mobile broadband stick January 12, 2015 and have only used it two days and already my account has been suspended. NetZero says I need to upgrade my plan to pay 79.95 a month instead of 19.95 a month. They also did not tell me they would double bill my account after the initial set up fee. I feel ripped off and would not recommend anyone use their service