facebook

could someone please assist me with some questions.
I want to permantly delete my facebook account . so far I have
clicked account settings - security - scroll down deactivate your account - reason for leaving - i no longer find facebook useful - email opt out - confirm - then a box comes up please confirm your password to continue deactivation - type in password - press deactivate now - it will not deactivate as box keeps popping up and deactivativation process doesnt work .i have tried this numerous times and it does not work . is there a direct email adress for facebook as I will have to contact them manually and get them to resolve the issue . thanks