Once you've decided to take your grievance about an attorney to the State Bar, you need to file an attorney complaint form. Find out how to resolve a problem without going to court, file a complaint against a lawyer, and how to get money back from an unethical attorney below.Instructions for Filing a Complaint Against a California Attorney. Fill out all spaces on the California Attorney Complaint Form completely. This document provides instructions for filing an attorney misconduct complaint with the State Bar of California's Office of Chief Trial Counsel. The form asks you to provide a clear statement of the problem you are having. In this statement, include important information and relevant dates. You may submit your complaint electronically or via regular mail. Please keep a copy of what you submit. Case opinion for CA Supreme Court HARRIS v.