So i have it set so member CANT delete their own post but somehow they are able to?
Did you do this?
ACP > User & Groups > Groups > Registered Options > Forum and Posts > Editing/Deleting Options > Uncheck this,Can delete own posts?
THEN click Save User Group,at bottom of page.
Please check forum permissions.
Are the users in an additional group that can delete posts?
No because it's not just him its everyone.
There doing it by going to Edit post, and at the top they are checking "Delete Post"
may be you have to rebuild forum permissions cache
tools & maintenance --> cache manager --> forum permissions --> rebuild cache
Dude, as I've said before, a user should have the right to delete his own posts if he wants to. It just makes me mad if I visit a forum that doesn't let me do that, and in most cases I never visit again because of it.
Just sharing my input.