I agreed to a "contract" that indicated payment every two months -- I figured great, money coming in that I don't count on, but will be nice when it comes. I've been doing this gig for two months. Still haven't received my first payment. It feels ... wrong. I've asked, I'm getting the "so sorry, I'll look into it" response. I don't want to not work for her, but I also can't just give away my time for free. Help?