Please, help me, my neighbors are blasting Christmas music in May.?

It woke my whole family up and it's so deafening, but I don't know if I should call the cops, I don't really want to, that's not my job in the house. And anyways, IT'S SATURDAY. They woke me up with their lame music at 8 o'clock in the morning, and I'm sure everyone wants to sleep in on a Saturday. Please, Please, Please, help me! Should I call the park manager?