(a) All members of the Bar who are required under the Oklahoma Rules of Professional Conduct, Rule 1.15, to maintain a trust account for the deposit of clients’ funds entrusted to said attorney, shall do so and furnish evidence thereof as provided for in Rule 1.15. Information received by the Association as a result of such inquiry shall remain confidential unless a grievance is filed against a lawyer which, in the opinion of the Professional Responsibility Commission, may warrant disciplinary action in regard to the handling of said trust account. Failure of any lawyer to respond giving the information requested will be grounds for appropriate discipline.

(b) Controversies as to the amount of fees shall not be considered a basis for charges in a disciplinary proceeding unless it is made to appear that the amount demanded is extortionate or fraudulent.