I can't get my local channels on directtv

We have DirecTV in our home. When we go out on the road I call DirecTV and tell them to suspend service on the three home receivers. At the same time I have them un-suspend the two receivers in the TV. I also tell them the address where we are so they can give us the locals in that area. This past summer we were volunteers at a state park in another part of the state. We had all the local Dallas channels on DTV even though we could get them on our OTA antenna. If we went home for a few days I notified DTV so they would un-suspend the home receivers and suspend those in the RV. While it sounds complicated, it really was not and it worked well except for the one time we came home and the local Dallas stations on our home receivers! Seems as though the DTV contact person had forgotten to change the service address back to the home.