Music Pounding Neighbors!

I have one of those types of houses that are connected by a thin wall to my other neighbors house, heck we even share a walk way. Normally they are pretty good, we had one time earlier this year where they blasted their music and I eventually, after a long day with a migrane went over and very politely asked her to turn it down just a tad. She did, course later she'd come by and do the same with