Just close down your account.
You can stop someone by sending message only by blocking that person from your Facebook. Messages will only be stopped when you block the person who is stalking.
I think if you block a person on facebook, he/she is removed from the friends list.
how to block messages of unknown person on facebook
Change her cell phone Block the person on the phone; change passwords. Do not answer or respond to bothersome messages (including telling your friends)--ignore them.
when they chat to you it will go to messages
If a person is habitually sending you prank or any type of undesirable texts or emails, ALWAYS delete that person's messages without opening or reading (if you don't have the ability to block). Don't discuss this person or their messages with anyone; in other words, totally ignore that person's existence. If others try to discuss this person, their messages or especially what this person "said" about you, very matter of factly say something like, "He/she wouldn't say such a thing", or "I don't believe that he/she is that stupid", then move to another subject. Leave the prankster without the satisfaction of hitting a "target", and the point of sending these messages altogether.
You can block the person so that it can no longer send you messages.
You can block them from within the conversation info screen by swiping the screen left. Then, select device menu and from there, select "Block". Also, you can enter their number manually through the block list by entering Settings, Privacy, Block List and then Block number.
what do you mean by blocking ? Stopping a sender of a text message from sending future text messages. It is a matetr that has become irritating. Mike
call the service provider and give them the number
if the mailing person is your friend then send him/her an add request, if he/she is not your friend and is irritating you with messages then block or report abuse on his homepage.
When you block someone it means they can't access your profile or send you messages.