Place it as the final beat of a prank-call edit, right after the caller starts their pitch, then follow it with a shocked reaction sound to show the caller's confusion and close the scene.
Over dit geluid
This short clip plays a flat, automated-sounding voice announcing that the number is no longer in service, lasting just over five seconds. Its sudden, matter-of-fact cutoff feels blunt and awkward, which makes an unwanted caller pause and wonder what happened. That dead-end tone turns a routine phone message into a quick, satisfying way to end a conversation.