How do they know you have direct TV?
Be careful when battling the beast.
They are liable to have your state legislature pass a law or tax that would limit access to direct TV...
I would write letters to each of your state and local elected officials.
Then harass the the linesmen anytime they come near your property...A Real Big dog that likes to growl does this well...If all else fails, build booby traps around your service connection points!
(Just kidding)
Scott