Hi,
@iRockMan1, the events are not added thanks to your email, but thanks to in-app notifications.
This post is good to remove existing invites, but if you want to prevent them (you will still need to remove the existing ones following this post procedure), see the approved comment @
http://apple.stackexchange.com/questions/258424/spam-icloud-calendar-invitation
to sum-up:
1- login to you icloud account (via an internet browser),
2- go to the calendar
3- click on the wheel (bottom left corner),
4- Preferences
5- Advanced
6- in invitations menu, select Email to instead of In-app notifications.
Also, good practice,
never ever refuse a spam invitation, or unsubscribe to a spam mailing list, it will just tell the spamer that your mail is in use

Cheers,
Cedric.