Wash. Rev. Code § 19.134.090
(1) Unless otherwise required by law, a consumer reporting agency, creditor, or collection agency that knows a consumer is represented by a credit services organization and also has knowledge of, or can readily ascertain, the credit services organization's name and address shall communicate with the credit services organization unless either of the following circumstances apply:
(2) Notwithstanding subsection (1) of this section, a consumer reporting agency, creditor, or collection agency shall not be required to communicate with a credit services organization concerning an account that is subject to a dispute if any of the following apply:
[ 2023 c 144 s 3.]