Dude that is super shitty..... I would agree with whoever back a few posts said the dude's probably a tweaker. I’d go over and have a chat with this dude just to see what type of dude he is. If he's a reasonable guy (which I assume he's not) then try to work with him, however if he's a crazy ****, which I would put money on, get a lawyer, some crystal meth, plant it in his back yard somewhere and then call the police and tell them you think he’s dealing drugs and that you see people walk into the back yard around a plant or something drop money off and then pick up packages of stuff and you are a little concerned because you see them carrying guns...
By the way, do you live out in the country or something???