How to stop getting someone elses Imessages and Calls. Hint you are using the same Apple ID

If you have an iPhone and are getting other people's text messages and calls or they are getting texts or calls that were meant for you then you are probably using the same apple id.
To fix Text messages go to Settings tap Messages tap Send & Receive then Make sure only your phone number is selected.
To fix calls go to Settings tap FaceTime then Make sure your number is only one selected.
You can use the same Apple Id as someone else even though I do not recommend it, however for whatever reason sometimes these settings can change and sometimes iMessages and Calls can be mixed up if you have other phone numbers associated with your apple id.