Scammed on tickets, website that sends mass text messages?

So a few buddies and I purchases tickets off craiglist. I always try to avoid doing that as there are tons of fake tickets out there, but this was last minute, guy had receipts and everything looked real. It was after the box offices were closed, so I couldn't call up to verify. Long story short, they ended up being fake, lesson learned no more craigslist buying, and now we're out $500.

Anyways, I still have the phone numbers from the sellers I figured I might as well put them through as much as I can with just that. Does anyone remember the site you put the numbers in and it puts them into a queue and can send up to 50 text messages?

Any other ideas what I should do with their numbers?