Put up some freaking video cameras already. There has never been a single verified haunted house in history, so you have a fantastic opportunity to be the first, turn science on it's head, and shut the mouths of all of us godless skeptics. It should be easy, what with it happening all the time as you claim. I look forward to your video evidence eagerly.
Google Michael Shermer. Over the last thirty plus years, he has scientifically investigated virtually every prominent haunted house in existence, including the notorious Amityville house. He has never found anything to make him believe in anything supernatural.
What I find so puzzling, and did even when I used to put stock in such stories, is: Why would a demon solidify a believers faith, in effect making them much stronger spiritually, by giving them concrete evidence of the spirit world? When I was a kid, I used to constantly hope I inadvertently did something to cause the demons to appear to me. I reasoned that it would be frightening for a moment, but then it would be over and I would never again be plagued with doubts. Don't you find it sick that Satan and the demons would give you the evidence to believe in God, while God himself refuses to provide similar evidence?