I filed a complaint last summer with the Better Business Bureau against Two Worlds United which is a company that arranges cultural exchange and summer abroad programs for students. I also contacted the Department of Consumer Affairs and the Attorney General's office. The BBB gave them an "F" rating, something I didn't learn about until after our bad experience. They're description of an "F" rating is as follows:

We strongly question the company's reliability for reasons such as that they have failed to respond to complaints, their advertising is grossly misleading, they are not in compliance with the law's licensing or registration requirements, their complaints contain especially serious allegations, or the company's industry is known for its fraudulent business practices.

I'm enclosing a letter I wrote to them outlining some of my complaints - of course I did not get a response, they stopped answering my calls, and I gave up after the BBB also could not get a response. I'm amazed they're still in business! I wish there was a way I could warn future customers that their kids might end up "stranded" in Europe somewhere if they believe everything these people say.