Cellular [2004, Germany, USA, action, thriller, crime, DVD9]

A woman is kidnapped from her home, taken somewhere, and locked in a room. There's a phone in the room, but before she can use it the captor smashes it. She tinkers with it and manages to get a dial tone but is unable to dial. She then crosses wires and contacts a young surfer. When she tells him that she has been kidnapped, he doesn't believe her or care, but he goes to the police to report the crime. When he gets to the station he gets the run around. While waiting he hears the woman's conversation with her captor and learns that her family's in danger so he tries to help them but in the process of doing that he commits some acts that make the police think he's a criminal or crazy; like stealing a car and brandishing a gun in public.