Hmm - So Haunter and The Caller are the types of movies that you don't want to describe too much, you know? I wouldn't want to give too much away...
With Haunter, it centers around a girl who is being haunted but - by what? Maybe the ghosts that used to live in her house - Maybe she's one of them...
http://www.imdb.com/title/tt2345567/
With The Caller - A girl receives a phone call. And it goes from there. And, no, it's not the urban legend of the call coming from inside the house.
http://www.imdb.com/title/tt1525890/?ref_=fn_al_tt_1