Did anyone say passive-aggressive?
Nothing gets the message across like a good passive-aggressive note. Some people would try to look the other way if something like this happens ang give up without putting up a fight, other people would start a vocal fight with their neighbor, and other people would choose to keep things civilized and write a passive-aggressive note.
If all else fails, being passive-aggressive is the right way to go. That way, you don’t have to tell someone what you really think of them to their face, and risk getting into an ugly confrontation, but you give them a piece of your mind. “Thank you so much for using your personal time to make our life harder” is priceless.