File A Complaint Against an Employee. Note, this portion of the website is only for filing a complaint against an employee(s) of the Dallas Police Department.Complaints may be presented in person or mailed to the City of Dallas Fair Housing Office, 1500 ManIla, Room 1 BN,. Dallas, Texas, 75201. How to File a Grievance. Click here for procedures on filing a grievance, the grievance form and the complete grievance policy. This form may be used to file a complaint with the County of Dallas based on violations of Title VI of the Civil Rights Act of 1964. 1. Have you completed at least 80 hours of work within the geographic boundaries of City of. Dallas in the last year for an employer? Here, learn about filing a complaint about your employer.