His office is hanging up on people if you tell them that you disagree with him....
You shouldn't tell them that. Tell them that his remarks were brilliant, and ask them where you can send a check for his Presidential campaign.
So try calling and telling his office that you agree with him that military members are idiots. Would they be dumb enough to keep you on the line for your comments if you slam the military?
Of course! How could anyone be stupid enough to disagree with a "nuanced" dufus like him?