ChamberofCommerce.com is a business aggregator site that collects publicly available information about local businesses and publishes it to the web. They allow users to set up accounts, claim their listings, and edit information.
How to Remove Your Information from ChamberofCommerce.com
FAQ claims that you can remove your information by using their contact form. You can contact the site directly here to ask directly that they take down your information. Be sure to include the URL of the page with your information on it–this should expedite the removal process.