I think you definately did the right thing.
You handled yourself exactly right.

My neighbor beside me one time I left my house around 4pm one Sat and came home around 11pm and the same music the same volume was STILL rattling my windows. I had to work at 7am the next day and I called the police. They came and he turned it down.
My neighbor behind me I think has more in the stereo system in his car then the car is worth. It isn't so bad anymore but he used to be really bad about the 'thumping'. One of my friends, a cop, lives across the way from him to and has told him repeatedly while off duty to keep it down, but when he is on duty he DOES.
I don't know what happened but he has finally kept it down more now then before.
And the thing is these aren't Teenagers!!! I am way younger then BOTH of the men!!!