With a state office in Wallingford, the Better Business Bureau provides reports on businesses, charity groups and organizations. It can help resolve consumer disputes with businesses, and promotes ethical business standards. Complaints can be made at ct.bbb.org, or by calling 203-269-2700. 

The Connecticut Department of Consumer Protection will investigate cases where consumers feel they were cheated or defrauded. You may call the hotline at 800-842-2649, visit   state.ct.us/dcp, or send written complaints to 165 Capitol Avenue, Hartford, CT 06106.