The Brady Bunch (1969)

S4E10 Goodbye, Alice, Hello

After Alice confesses that Greg and Peter accidentally shattered one of Carol's cherished antique lamps, the kids start to ignore her. The situation worsens when Alice naively mentions to Carol that Marcia had left the stereo playing all night, prompting the girls to join in on the cold treatment. Feeling unappreciated and sidelined, Alice decides to resign from her position.