Dish Network Will not cancel my service after i called Atlanta Georgia

on 10/25/2007, i called dishnetwork to cancel my service, the person got rude and told me it will cost me $52 dollars for early termination and that i would have to send the equipment back, as of 12/07/2007, they have not canceled my service and are still sending me bills as if i still have their service.
i have sent them messages back with their bills with no response. i am still waiting on the address to send their equipment as i was told, i am still waiting on my final bill that reflects the 10/25/2007 termination date that told them to end my service.

George
richmond, Indiana
U.S.A.