I'm assuming that you already tried contacting the listing owner and they haven't been cooperative. The easiest thing to do would be to make them want to remov

I'm assuming that you already tried contacting the listing owner and they haven't been cooperative. The easiest thing to do would be to make them want to remove your website. At the top of your main page put a little note saying something like "If you're searching for <foo business> in <location> we're not them. Please click here." Then, since they don't have a website you can send users to a page that explains the situation, suggests that they may want to do business with a more reputable company, and provide links and phone numbers to their local competitors. Alternatively, if you don't care about your websites reputation, you could just fill it with porn, popups, or other content that users won't expect or want from a business.