Direct communication is important!  Beating around the bush or hinting about what you want or need really just isn’t the way to go.  If your goal is truly to be understood, say what you mean.  Rather than let someone wonder what your problem is, just tell them.  If it’s them, explain why you are upset with them.  If it’s not them, let them know.  And don’t use others to get your message across – be direct.