Mindpix Corporation Not paying artists who performed at their New Beginnings Concert Las Vegas Nevada

This public traded company, Mindpix Corporation put on a concert on 12/21/12 called the "New Beginnings Concert" as a celebration that we survived the so-called Mayan Apocalypse. There's many entertainers that still haven't gotten paid from this show. I myself submitted an invoice to then-President and CEO Armando Almirall for a $1000 for my DJ service for the concert on 12/25/12. Finally got an answer from his secretary, Reina Zeigler on 2/19/13 that payment would be sent out in a week. It's now June and not a word from this company since then.