Send two letters; one to the attorney, Certified RRR, and cc the other to the Washington State Bar Association (phone: 800-945-WSBA or 206-443-WSBA). In your letter, include the full details (amount, dates, etc) and that you demand the funds be transferred to you within 3 days of receipt.
Also, you might be interested in the following:
The WSBA (Washington State Bar Association) Office of Disciplinary Counsel has a website with an online complaint form at:
http://www.wsba.org/discipline.html
The WSBA Rules of Professional Conduct (RPC)
RULE 1.14: PRESERVING IDENTITY OF FUNDS AND PROPERTY OF A CLIENT:
"b) A lawyer shall:
(1) Promptly notify a client of the receipt of his or her funds, securities, or other properties;
(2) Identify and label securities and properties of a client promptly upon receipt and place them in a safe deposit box or other place of safekeeping as soon as practicable;
(3) Maintain complete records of all funds, securities, and other properties of a client coming into the possession of the lawyer and render appropriate accounts to his or her client regarding them;
(4) Promptly pay or deliver to the client as requested by a client the funds, securities, or other properties in the possession of the lawyer which the client is entitled to receive."
http://www.courts.wa.gov/rules/display.cfm?group=ga&set=RPC&ruleid=garpc1.14
Washington Court Rules for Lawyer Discipline (RLD)
RLD 1.1 GROUNDS FOR DISCIPLINE
"(i) Violation of the Rules of Professional Conduct of the profession adopted by the Supreme Court of the State of Washington;"
http://www.courts.wa.gov/rules/state/rld/home.htm
Hope that this helps... Oh, and no fee!!!