Why am i being visited by my friends dead parent's @ dead cat?

I don't believe they are ghost, because I don't believe in them. I only believe in evil spirits aka demons. Someone once told me, "If you see, or feel your in the presence of a ghost, tell them to go back to Jesus". I was told this when I was younger, though, and I never really gave much thought to it until I was older and my mom, and I got a liking for staying at haunted hotels, and going on haunted tours. Scary movies were are favorite, so this kind of thing facsinated us.. it was like being in a real scary movie! I realized that ghosts were actually demons, and saying, "Go back to Jesus" wouldn't work because they belonged to the devil. Then, at church, my youth group was talking about the subject. They said the way to make an evil spirit go away is to praise Jesus right there, aloud, because evil spirits can't stand to hear Jesus' name. So, next time these spirits bother you, start praising Jesus, or sing a hymnal, say a prayer to Him. They'll leave you alone.