Dish Network cheating customers

Hi,

I subscribed for dish one and half year ago, when i initially called them for the service they asked me to have a two year agreement but i said i may not stay here in the same place for two years then they said they can fix the dish any where in united states and will provide me with two years service

and now when i moved, they are not able to get the signals at my new place. only place they can fix is on the front door of the house, i am renting this house and i can't allow them to drill holes or fix it there and to cancel the agreement they want me to pay them cancellation fee, i talked with every one and they are not willing to even reduce the cancellation fee, they are saying my house dosent have a singnal and its not their fault( even though they mentioned it at the time of installation that they will cancel with out fine if no signal at new place) so i have to pay them the amout, i cant say any thing about their double standard way.