I have a client for whom I built a site. He later had someone else do a second site for him (for another city), but the business info ( address, phone, etc) are the same on both sites. Now client wants me to do SEO for the location built by the rogue designer, but the guy who built the site won't give up the login credentials. I don't really care if he just kills the site, but he won't answer phone calls etc.
What action can I take on this problem?