I refuse to support ANYONE who does business in ANY form like this. I really liked the app, but at this point I refused to be jerked around like this.
Please check whether Beta version of NCT is working now. I am sure that it was twitter.com fault - I don't have button "Disable NCT 3.0.0 Beta". I am also very angry because for ALL of betatesters I have free copy of NCT!
You mentioned one magic word: "support". Actally you didn't contact with me so how could I know about your case? Btw: There was a time when Twitter Status users had option for free upgrading to NCT and I'm pretty sure that such an action wasn't only incident.
I am very sad - no one is jerk. Anyway, please contact with support.