I´m looking for the title of a film or TV movie aired in the late 70s or early 80s about a woman who moves to an apartment and begins to be stalked by a stranger who lives in the opposite building and records her conversations. She has no clue how he does it and hires an investigator but he finds no microphones. Then the stalker even gives her a communications set to talk with him. She accused a man living there who was a sexual pervert who ended killing himself under her pressure. The film ends with the stalker calling her and apologizing by being abroad lately. It´s very similar to the film "Someone´s Watching Me".