To update things a bit:
I got another call yesterday from someone I didn't know. Before I called her back, I called back the first girl, who asked "have you ever thought of getting involved on campus?" I told her yes, that i just got back from a meeting actually

She went on to talk about how her chapter was having a little get together, an informational type session on Sunday, and would I like to come. I accepted her offer. I called back the second person, who started to launch into the same speech and I told her that I already spoke to someone else. She said "oh, then my call to you must have been a follow up call." So it sounds like they were pretty insistant upon getting in touch with me...
I checked out their calendar on their website and it seems that their bid day will be February 9. If the party is on the 4th, that means I will know pretty soon. Lets just hope for the best...