Dial Code Santa Claus (1990)

Thomas de Frémont, a clever young boy with a fascination for action flicks, finds himself in a nightmarish situation on Christmas Eve. His innocent attempts to celebrate the holiday take a dark turn when he unknowingly connects with a disturbed man who insists he is Santa Claus. As chaos unfolds, Thomas must navigate the horrors of his own creation, transforming his festive excitement into a fight for survival against a sinister presence.