Thank you so much, I didn’t uninstall messenger I just deleted data and logged in again and it worked like charm.

I tried what you said about clearing app data and it still didn’t work.
I went into settings, application manager, facebook messenger and I only had two options there, uninstall or force stop. I didn’t do either as I wasn’t sure what was correct.
Went back to application manager and selected reset app preferences and shut down and restarted phone and this didn’t work.
Anything else I can try before having to block as I’d rather not cause problems?

Yes it will remove them and they won’t be able to send you message

NO. Nothing will be deleted. No need to worry about that. All your details are stored in Messenger’s server not your phone

Or would it be easier just to block the person? Doesn’t that remove them from the contacts

If I clear my app data won’t all my messages be deleted though? And the app reset itself?

Hello JD,

Thanks for your comment. I just tried to delete a contact as well and found out exact thing you complained. It deleted and still showed the contact when I checked back.

The solution is this:

Since you’re using Android, either uninstall Messenger or clear App data from App manager from phone settings. Then login back to Messenger, you won’t see the contact again.

When you earlier deleted the contact, it worked but since your local Messenger data has not been cleared, that’s why it still showed.

Try this and let me know

Add them using phone number