A full day of telephoning later (and for those of you who know me well, that alone should indicate the depths of my desperation), things seem to be okay. I'm taking the GRE in the morning (eek! and am not at all prepared, haven't thought about any of this stuff in literally years) and will call them as soon as I get my unofficial score report. That should hold them over until the official score report comes in a week later.
Everyone cross your fingers for me around 8 AM tomorrow morning, okay? I don't mind taking tests cold, but it's a little hard on the nerves when I don't even remember the topics the test is about.
Off to do a sample GRE and hope for the best!