Ryan here at YC. I help build YC’s workatastartup.com, and also work with companies to help them find great people for their teams. Part of that includes teaching them to hire well -- communicating clear expectations, having fair/reasonable questions, paying for the interviewee's time, and hiring when they’re in a good position to do so.
What you experienced sounds incredibly frustrating. Sorry that you went through that. I don’t know the details on the company side, and the market is obviously pretty bad. But that still shouldn’t be a catch-all excuse for you having a bad experience.
If you’re open to it, would love to connect live and learn more about what happened. And I’m also happy to make intros to founders/companies that might be a better fit -- especially ones that are in a strong economic position to do so.
My email is ryan AT ycombinator.com if you’d like to connect. Hope to hear from you, and help if I can.