Ghost In My House

I hate being in my sister's room for too long. I hate it some much because dark spirits follow me to there and most the time only there. If the lights are off they dart back and forth across the room as dark shadowy figures. I have tried to talk to them before but nothing happened. Not too long later (in the dark) I was on youtube for a couple of hours watching a show and had my back turned to the rest of my sister's room. As I was so intent my foot slightly hung off the bed. Before I knew it something was holding onto my ankle and started to pull me off the bed. I jerked back really hard before I got pulled off and hid under the bed sheets. I never saw what ir who pulled me. And they have seemed to leave since, though I haven't been back in that room again after dark.

PS you should know that it use to be my room until I was 10 years old. The first time I remember anything happening was when I woke up in the middle of the night and the closet door was cracked open (though I was sure I had closed it before I went to bed:and parents didn't open it), well while I was frozen stiff I saw glowing red eyes peer back at me, and I ran out of there before anything else happened, I was way to scared and freaked out. Of course I told my parents but they didn't believe me until I started getting little scratched all over my periodically. That's why I moved to a different part of the house and it stopped happening just like that!

Can anyone explain this? Because I certainly do not understand this spirit/demon's purpose here.

Thank you, gentalcarrier