214-670-FAIR (3247). A formal complaint may be made in one of several ways: A person may submit a Citizen's Complaint Form to us.City of Dallas Fair Housing Office. 1500 ManIla, Room 1BN. This portion of the website is only for filing a complaint against an employee(s) of the Dallas Police Department. Enter the case number from the other court in the Other court number field. •. Airline Name: Flight Number: Date: In order for your complaint to be considered complete, you must file within 180 days of the alleged act of discrimination. You are not required to use TREC's Complaint Form. Make sure you fill out the entire form. It's OK if you need to add extra sheets if you run out of room on the form.