If a request for copies of exempt organizations documents is not fulfilled, to whom may the requester complain? The complaint should be addressed to: IRS EO Classification Mail Code 4910 DAL 1100 Commerce Street Dallas, TX 75242 The IRS Required Disclosures course explains disclosure requirements for tax-exempt organizations. Additional information Where Do I Send Complaints About Exempt Organizations? Form 13909, Tax-Exempt Organization Complaint (Referral) Form PDF Copies of Scanned Exempt Organization Returns Available