If you’re a PlayStation 4 user and have an account on the platform, then deleting your sub account is a must-do if you want to stop receiving messages from that account. Deleting your sub account will also remove any content and achievements that are associated with that account. To delete your sub account on PlayStation 4:

  1. Log into your PlayStation 4 system.
  2. Select “Accounts” in the top left corner of the main screen.
  3. Scroll down to “Sub Accounts.”
  4. Click on the “Delete Account” button next to the name of the sub account you want to delete.
  5. Confirm deletion by clicking on the “Yes” button at the bottom of the screen.