The Caller (2011)

Mary Kee, a distressed divorcee, finds herself haunted by unsettling phone calls from an enigmatic woman. As the calls escalate, the stranger discloses she's reaching out from the past, prompting Mary to sever ties. However, the relentless caller isn't easily dismissed and seeks vengeance in a chilling and inventive manner. With each ring, Mary’s reality spirals into a nightmare, forcing her to confront her past and the malevolent force that won't let her go. The suspense builds as the boundary between time and terror blurs in this gripping psychological thriller.