I live in a small ish block of flats and some arsehole buzzed my buzzer at 3am this morning.
I jumped out of bed in a fright because the buzzer makes such a load noise it always scares the life out of me when I'm sleeping!
Told him no I wasn't letting him in and he needs to buzz his own buzzer.
Turned my buzzer off and went back to bed.
Really gave me a fright, not helped when he then proceeded to knock on my front door about 5 minutes later!
Was I unreasonable? I tend not to let people in if I don't know them, we also had trouble a few months back with one particular flat who seemed to only have one set of keys between about 6 of them and were forever buzzing at all hours to be let in.