You want to get with Dish and have them convert your account to an RV account.
I find on-line chat is much superior to a voice call when trying to get something done with Dish customer support.
Since Jan 1 when we've moved from Davis Mountains State Park in far west Texas to the San Antonio area, to the Dallas area, to Texarkana, to New Orleans, to central Florida, to Fort Lauderdale, to Key West, to Daytona, to Perry, GA, to Charleston, to the Outer Banks of North Carolina, to Williamsburg, VA, to Washington DC to where we sit right now in north east New Jersey - I've been able to reset my service address quickly with on-line chat.