This happens if someone else has a hold of your Apple ID or you ... If there are any contacts associated with iMessages that you don't want to appear in your Messages app, you can disable it.

It's far more powerful than most people think. There are plenty of iMessage features that most people don't know or don't use ...

Turn iMessage OFF everywhere other than your iPhone ... From there, just sign out. But if the someone else using your devices knows your account's password, they can change your settings just ...

Another thing you can do is report spam and junk iMessages. When you get an iMessage from someone you don’t know, there will be a Report junk link. Select the link to forward the sender’s ...