Should I call 911? Please help ?

Seriously? you don't consider doing "if I go to the back of my backyard and stick my head through the little hole in the fence and wiggle into their yard a little bit, I can't help but overhear their conversations because that hole is right underneath their bedroom window." that eavesdropping, or looking through their garbage! that just plain CREEPY! Anyway if you are not a T-R-O-L-L than NO its none of your business anyway besides no one got hurt so whats the point? I think the only one that should have the police called on them is you! For being a S-T-A-L-K-E-R!