Magic Forums

Well, i actually don't know if this goes here but here i come.
Ok,i don't know anything about magic or mysticism, and things like that.
Since a couple of days now ( i don't know how to call it ) entity,spirit or whatever he is, there's is someone who doesn't let me see my friends ( although i don't know nothing about spirits i have some demons one being that cames from another galaxy and more like that as friend. Some people told me this and i already saw them with my eyes so, i do not doubt they exist ) i can't get rid of him because he keeps telling me i promised something to him but he doesn't want to explain me properly so.....what can i do with this.....entity or individual? He's not alone and haunt my two other friends if they get to much close to me.