When I was first banned, I spoke to one of the channel operators and asked them why I wasn't allowed in. They told me they were sure I was someone else, and they didn't believe my story that "I'm new here". Since I realized there was no point talking to people who had already made up their mind, I decided to try to overcome their ban. There is apparently no software that lets me change my /whois information, and the proxy approach costs the same as my ISP, so I may as well just change ISPs and see what happens.