File an Online Complaint. STEP 1: USING BLACK INK ONLY, Fill out the "Civil Cover Sheet." â–« Write in "Maricopa" as the county. Find out how to file an insurance claim to get compensation if your insured USPS package was lost, damaged, or had broken or missing pieces. Complete this form, especially noting the Defendant's exact address on the last page. What do I need to know before filing a complaint ? Every petition sheet must contain a notarized affidavit of the circulator, which. I filed a complaint on the USPS website using the reference number on a receipt and the postal clerk retaliated against me. Thank you for completing this form. A scam company sets up automatic debits from your bank account to qualify for a free trial or collect a prize.