Bells Are Ringing is a 1960 American romantic comedy-musical film directed by Vincente Minnelli and starring Judy Holliday and Dean Martin.
See also Part Two: https://dai.ly/x81nqck
Plot - Ella Peterson works as a switchboard operator at the Susanswerphone answering service. She can't help breaking the rules by becoming overly involved in the lives of the subscribers. Some of the more peculiar ones include a dentist who composes songs on an air hose, an actor who emulates Marlon Brando, and a little boy for whom she pretends to be Santa Claus.
Ella has a secret crush on the voice of subscriber Jeffrey Moss, a playwright for whom she plays a comforting "Mom" character. She finally meets him face to face, when she brings him a message under a false name (Melisande Scott) and romantic sparks and some confusion begin.
A humorous subplot involves the courtly Otto, who convinces Susanswerphone to take orders for his "mail-order classical record business", known as Titanic Records. Unfortunately, Otto is actually a bookie whose orders are a system for betting on horses. Unwittingly, Ella changes orders for the supposedly incorrect Beethoven's Tenth Symphony, Opus 6, not realizing she is changing "bets".
Although the police begin to assume that Susanswerphone might be a front for an escort service, the plot ends happily, with Jeff proposing, and her wacky subscribers coming to thank her.
