>>1
Thanks for that, Cynir. Although it seems to me that the problem of the clerk in this film is rather different than in the story you describe - almost the opposite problem, even.
I think there must be a number of films on this site with a similar theme to the problem you speak of, but the one that immediately comes to mind is Ivanov-Vano's animated feature "Lefty" (1964). (although he kind of botched the ending in my opinion and made it way more confusing than it should be - the original story's was clearer and better)