Does an attorney have an ethical obligation to answer any member of the public when contacted, or can the enquiry be ignored?

Assuming the attorney has accepted some type of public remuneration for legal work done on a project in which both public and private funding is involved; does he incur a higher level of ethical responsibility in dealing with questions from the public related to said project versus having only private financing involved? Can the public be "stonewalled" by publicly funded attorneys? My state lawyer discipline board has declined to investigate my complaint related to this subject; lawyer ignored my request for information, forcing me to re-mail original request by cert. mail, after 2 months of waiting. No explanation from attorney as to why the delay. Can he be sued in small claims court for my time and re-mailing expense?