So, I sent a polite but very specific e-mail to my manager after the second call to the police. I was rather thrilled to read the reply this morning. Validation is nice.
" I am so sorry about the problems that you are having with your neighbor.
I will do what I can, I will send him a letter and see if that will
help but you continue to do what you have been doing. Calling the
police. I would not wait long to do so though if it was me. Shortly
after 10 pm everyone needs to be winding down. Especially this time of
the year. Let me know how this progresses. Thanks for your letter."