I live in a smallish block of flats, with our front room window right next to the main security door. The flat only has three windows in the place, and they are all forward facing, so to get some kind of fresh air in the place (which btw is riddled with damp but that is another story, a story the housing association do not want to hear ) I have to have all three windows open.
It really annoys me that my neighbours will ring the buzzer for me to open the main door (I think they just guess a number and hope for the best) and because the window is open, they can tell which buzzer they are ringing on. If I ignore them, they cheekily knock on my front room window and holler at me to let them in. In some cases where I have ignored them, I have had people come to the window, stick their hands in and move the curtains to shout at me to let them in.
I tend to wander off to let them in, muttering expletives under my breath and then get shouted out by these numptys that I should let them in and be nice about it. Erm.. what about using your keys, just for argument's sake?