I don't remember Creighton saying to call when I interviewed there on the 14th of Sep (Tropicana, I think we were there on the same day). But it seems that all the little (and big) details about schools that I have visited have all blended together at this point.
But I spoke with one of the students there and he said to go ahead and call the Creighton admissions office, what could it hurt? The worst they could say is that they won't tell you on the phone.
I do remember them saying they may consider emailing out acceptances this year.