This is the only thing that comes to mind:
The Twilight Zone (1980s TV anthology series)
"Healer"/"Children's Zoo"/"Kentucky Rye" (3-story episode)
From IMDb: "Healer": Small-time crook Jackie Thompson finds that a rock possesses special abilities. "Children's Zoo": An invitation to a unique zoo offers a girl a solution to her bickering parents. "Kentucky Rye": Drunk driver Bob Spindler finds himself in an unusual bar after an accident.
IMDb review of "Children's Zoo": An innocent little girl (Jaclyn Bernstein) is caught between two raging and angry parents (Lorna Luft and Steven Keats). All she wants is a trip to the zoo. Only this turns out to be a most unusual zoo, as it's really a prison for disgruntled parents, a place that children can trade them in for a new set of parents. Neat story and concept from director Robert Downey Sr. (father of RD Jr., of course). Director/writer Wes Craven has a cameo. // When she picks out new parents, they seem anxious to do anything to appease her. It's understood that, if they return to their previous behavior, they can be traded in again.
There might be a movie somewhere, but the only think close might be "Trading Mom", a fantasy/comedy aimed at the juvenile audience.