Yeah so Delta looked into this, admitted it was a mistake and opened the GUC back up. However, I randomly went back in today and its closed again. I have now talked to 4 people over the last 45 min on the phone and they won't budge. They say I used it for a flight which I did not. I keep telling them "don't you have notes or a record of the last phone call" to which they say no. Now they actually hung up on me. Fun!