Log in Facebook account that you desire to unsubscribe.
Click account (above on the right) and select account settings.
Completely Delete Facebook Account
Click on 'Security' in the column on the left. At the bottom of the right pane, click the link "Disables your account"
In the window that opens, inspect one of the boxes to indicate the reason that you desire to deactivate your account. If let uncontrolled package on the side of not receiving email, will continue to get invitations to occasions by your friends, requests to join groups, etc. Then click the button to verify,
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 down. If one day want to reactivate it simply please, log in utilizing your e-mail address and old password.
Well I hope this Tutorial will help them to unsubscribe or Completely Delete Facebook Account.