I've had similar experiences. I had a recruiter set up a technical phone interview with the developer who never called. No brief email saying something like, "Hi, our developers thought your qualifications weren't a good fit for the position. Good luck on your job search." After emailing the recruiter she said she would talk to the developer and "look into it." I never received any further responses.

My favorite is when you apply somewhere and receive no response. Then several months later, you're contacted by a recruiter from the company at which point you've long past moved on with an offer from somewhere else.