The Messengers (2007) on Netflix

Roy Solomon, his wife Denise, their teenage daughter Jessica and their little son Ben move from Chicago to an old farm in North Dakota to rebuild their family, financially affected by the long unemployment of Roy and a car accident of Jessica that has brought serious problems to Ben. Roy plants sunflowers in the land and hires the stranger Burwell to help him until the harvest. When Jess sees ghosts and poltergeists in the house, her parents do not believe on her. She tries to prove that she is not insane or trying to call their attentions, and discovers the fate of the former owners.