Somehow, I had thought it was my Cass FB page, when I started getting notifications and stuff. I had looked at it, and saw that I was an admin. So, whoever created it made me an admin. Well, I just exercised my admin rights and got rid of all the other admins that I don't know who they are, and made the group closed, and myself the only one who can approve members, and only members can post. I'm not sure how to delete it entirely.