STOP MULTIPLE MESSENGER POPUPS

HOW CAN I STOP WINDOWS MESSENGER POP UP BOXES AFTER I HAVE ALREADY GONE INTO GROUP POLICY AND ENABLED MESSENGER TO “NOT” RUN AT ALL?!!!

I GET MANY BOXES AND THEY SEEM TO BE ADS OR SOLICITATIONS FOR GETTING RID OF THESE VERY ANNOYANCES.
IS THERE A PLANTED SOFTWARE ON THE COMPUTER OR A TROJAN, ETC???