There are 3 basic actions to finish the trashing of your organisation Facebook Page.
STEP 1: OPEN YOUR PAGE AND ALSO CLICK "EDIT WEB PAGE", IN THE LEADING RIGHT AREA.
How To Delete A Facebook Page I Made
ACTION 2: CLICK "PERMANENTLY REMOVE _______", FOUND AT THE END OF THE SCREEN.
STEP 3: CLICK "ERASE", BASE ON THE BOTTOM-RIGHT OF THE SCREEN THAT APPEARS.
Done. Ended up. Adios Facebook web page!