Dish screwed with us as well. When they lost the court case with Tivo, they had to replace all the DVRs. They wanted to take a DVR that I already paid for and not only charge me for a new one but also force me to pay $10/month for it.
I waited it out for about a year until they finally offered me a new box for free, more HD channels and a $200 credit.
If it wasn't for Dish having Eastenders, I probably would have changed a while ago.