Most forums that have polls today have a limit on options so if that's the case with aus-city just limit the amount of offices to say 10-15 and if this is the forums limits and if anyone has a complaint about another office they can just post the office in question with a simple post under the poll and if they're scared to post that well bad luck.
You can't please everyone,it just shows you the amount of intimidation that docs must use if people that join a public forum and are scared to post anything against them.