very pissed off right now

The sheet specifically stated that to be eligible a PNM must attend 8 out 12 parties. Also I did notify The Greek Life Officer prior to the beginning out recruitment that I had i class that I would not be able to miss. She said I was fine. I spoke with the Rho Chis and they said I would be ok. that's just where I was confused. Also I go to a small not so competitive school if that helps. I tried a few times after this happened to go to the Greek life coordinator but she keeps blowing me off and saying you can COB. I was willing to prove I attended the parties. Honestly, I would have rather been cut knowing no one wanted me rather than knowing there are people who could of wanted to invite me but couldn't because of this mistake