does spirit exist

I beleive spirit does exist in our world.But i personaly has an experienced of spirit. Back in one year ago,I had encounter a very strenght situation.I was in the computer room working on my stuff,and the same time i heard someone turn on the TV.I got out there and i have seen no body in my living room but the TV was on and i turn it off.After a while the TV was on again,that time i started to scare,,,,it's impossible...i tried not to think negetively . Since that incident happened i pray to god hope the spirit wont come into my life.Beleive me or not until now it never happen anymore.