I called Dish to upgrade from my 811 to a 942. I was told I had to go to a local retailer. When I asked for the name of a local retailer they didn't know who it was. When I signed up I called the Dish 800 number....not a local retailer. If I understand this correctly Dish can not help me with a 942 upgrade....I have to find out somehow who my local retailer is. Is this correct???