As a side note, since it sounds like you don't have a test suite that would have raised an alert about this problem, there's an additional communication problem that should usually be handled by including an inline comment explaining the (apparently nonobvious) problem. — chrylis 1 min ago

Sorry but your last paragraph is terrible advice. The fact that you're paying somebody to provide a service to you in no way entitles you to be rude to them. The fact that you're asking them to do something for you (even if it's something they should be doing anyway) makes it extra important to be rude to them. — David Richerby 48 secs ago

I'd recommend against a note with anything other than your phone number. I get the shyness factor, but don't let it take you to a place where you are being "weird". (Handing unsolicited notes to people IS unusual, and so, will make the recpient uncomfortable.) GOOD LUCK! — Glurth 1 min ago

Have you considered parking in front of the door yourself to see what the other neighbours' reactions are? If they don't care, then just continue parking there so you won't be blocked in. If they do care, then why aren't they doing anything about Mr. Suspension? — dotancohen 1 min ago

Have you tried parking there yourself, preventing them from parking there? — pandalion98 21 secs ago

I think you have quite negative view on people, some people are just incredibly dense and don't get any hints. Especially people with things like OCD can be so busy with their own problems that they have no idea what is going on around them. — Orbit 1 min ago