I don't think IABU per se, but there is a substantial chance I'll come across as a catsbummouth person, which is not what I want.
We live next door to a school, which has an attached RC church. I enjoy living next to schools (grew up next to one). There's a problem with the alarm and periodically it goes off. Recently it's been once a fortnight for a few hours before it suddenly stops. There was an instance late last year where it started going off on Friday evening and carried on all weekend.
If we have the TV on (loud) it blurs into the background but if we're working (I study, DP is self-employed) it is a total pain. The weekend where it was constantly ringing I was trying to study for my exams and it was a big distraction. DP also likes to sleep with the window open (he doesn't sleep well without it, which I accept may be psychological) and we couldn't do that either. I called the school (no surprise, no answer), called the local police station (figuring it was a burglar alarm so they could at least see if they could switch it off/someone had broken in), called the County Council (they had no emergency number listed and no keyholder listed 
) and, having watched on Sunday morning and Saturday evening as churchgoers came and went without the alarm being switched off, I tried calling the church secretary to see if someone had a key. No answer and no one called me back.
I also work for a school and both my parents were governors at a church school - at their school (and mine) there's a caretaker and, in the church setting, someone in the church has a key to the school in addition to the caretaker.
The AIBU bit: WIBU to write to the headteacher and ask for contact details so I can call someone to get it switched off when it inevitably happens again? Or will I come across as a lunatic? I just feel like it won't get fixed until I say something.