Visit Facebook account that you want to unsubscribe.
Click account (above on the right) and select account settings.
How Do You Completely Delete Your Facebook Account
Click 'Security' in the column left wing. At the bottom of the right pane, click on the link "Disables your account"
In the window that opens, inspect among the boxes to indicate the reason that you wish to deactivate your account. If let untreated the box on the side of not getting email, will continue to receive invitations to events by your pals, demands to join groups, etc. Then click the button to confirm,
In the window that opens, enter your password and click on the "Deactivate Now".
And you ready you a message telling you that your account has actually been shut off. If at some point wish to reactivate it just please, log in using your e-mail address and old password.
Well I hope this Tutorial will assist them to unsubscribe or How Do You Completely Delete Your Facebook Account.