STEP 1: USING BLACK INK ONLY, Fill out the "Civil Cover Sheet. " â–« Write in "Maricopa" as the county.If you'd like to file a complaint against a fiduciary, please fill out the complaint form and mail, fax or hand deliver to the address below. A civil "Complaint" is a document in a civil case that outlines the Plaintiff's facts, legal theories and requests relief from the Court. A verified complaint does not require an affidavit or notarization. It does require a declaration under penalty of perjury. To file a complaint, you may complete one of the following two options: File a complaint online. Instructions on Filing a Complaint. Please make all correspondence to this office in writing. The information listed below is for those who are looking for information on how to file or defend against a small claim .