Oh my gosh! I feel your pain! We had HORRIBLE neighbors behind us - SAME EXACT situation (hopefully they aren't the same people!). Anyway, they did the same thing. When they first moved in, I was pregnant and NOT happy to be woken up at 4 in the morning on a Tuesday night. I went out there several times asking them to keep it down, but they were incredibly rude. So, I quit being nice too. Made it hard to "love thy neighbor as thyself!" So, I called the Police - every single time. Then, they got even more childish by flicking their lights on and off (which shined directly in our room), playing the guitar, etc. Eventually, they sold their house and moved on, but it was a miserable 3 or 4 years. You shouldn't have to put up with it, nor should you have to make major changes to your life or home to deal with disrespectful neighbors. We were discussing landscaping to help create a sound barrier, but we were also discussing meeting with our City's code enforcement to discuss the issue, with a possible trip to court. Our issue was that their covered porch was just a couple of feet from our fenceline. I'm not sure if you have the same situation, but look into a sound barrier, but also meet with City officials to discuss the issue. If you haven't already been logging each time you call the Police, start doing it. This will help your case. Good luck - I know how uncomfortable you are!