The Coming Thing(1975)

Story is pure corn: Linda is a secretary who moves from Fresno to San Francisco and can't land a job there. Endless shots of the back of her head (wearing a crappy, phony looking blonde wig) in various phone booths are used in this mainly MOS-shoot with voice-over to establish her boring job hunting. Maybe Gerber was hoping to move to England and get hired to shoot Dr. Who episodes.