Complaint Information. Please explain your complaint: Try to be brief, but be sure to tell WHAT happened, WHEN it happened and WHERE it happened.The more information you provide, the better we can help you. This sample letter has choices to help you build your letter. When you write, pick the words that describe your situation. 1. Fill out a Complaint form. a. Near the top of the first page, write your name in the space above the word. Method of Proceeding. The arbitration hearing date is written on the front of the complaint mailed out to the Defendant. The Food Safety Program inspects food operations in Allegheny County that make, distribute, or sell food products.