if it happens again call 311 and lodge a complain w/ code compliance. they won't come out and tell them to keep it quiet at night but they will leave an official looking note the next day telling them to keep it down. that might scare them a bit... you'd also have an official record of complaint. you could always throw their breaker outside and wait there for them to come out and turn it back on. then you could express your feelings to them face to face :angry