Most home improvement superstores carry them under the guise of 2" steel round fence posts.He told me they no longer have the poles because they are so hard to find, and then said I wouldn't be able to find them anywhere either.
The issue as I see it is whether or not you can do a pole mount in an apartment complex. Most won't allow it unless it is somehow anchored to your deck.
Obviously the installer decided that it wasn't worth his time. It is not a trivial installation.
In any event, you need to call DIRECTV and make sure they understand what did and didn't happen.