So, I've waited a week and the giveaway I won has not arrived

I can't for the life of me figure out how to PM a mod like Cult. I just don't see the button. Maybe I'm just missing something obvious. Anyways, how would I go about getting this addressed?

Edit: Well, it looks like everyone else in the giveaway received their copy, so I assume he either just forgot me or it's buried in my e-mail somewhere, although I did check all e-mails from now to a week ago. I'm sure there's just some mix up that can be easily resolved, but I'd still like to know how I'd tell a mod if this did happen to me.