Whats the cancellation fee?

I have had hughesnet for almost 3 months , Very unhappy with it, paying more and getting less, very disatisfied , wondering how much it would cost to cancel, also no one told me i had 30 days to change my mind , i had wittenberg internet before will be going back to them, not sure why hughesnet said i needed a dish to get my internet i live a few blocks away from wittenberg telephone, i am going ti cancel as soon as i can, hughesnet is awful . Hate it.