I bought a site a couple of years ago, the domain name was and is registered through a company called VizaWeb
http://www.vizaweb.com - you can see that the website looks like it hasn't been touched since 2002. I received a renewal notice over a month ago, those must be automated, I paid for the renewal through Paypal. The domain hasn't been renewed, the registration still says UN-PAID. Nobody is replying on their ticket system, they're not answering emails, and when I called their toll-free number it was a phonesex line.
wtf do i do? what happens when a domain registrar just walks away? their admin is bare bones, there's no information, no links to anything where I could transfer the domain from them.