Where and how to file a complaint. If you have a complaint against a police officer or sheriff's deputy, you should first direct your complaint to the local law enforcement agency.In addition to the webbased public complaint form you can download and complete this pdf version. Who can file a complaint? Any person who feels that a San Bernardino Police Department employee has engaged in misconduct. 2. After completing this form you may deliver it in person to the police department or mail it to the following address: CSU San Bernardino Police. Filing a complaint is one way to ensure that departments are aware of a police officer's misconduct that could possibly lead to corrective action. Defendant generally denies each statement of the complaint. City of San Bernardino Municipal Government, San Bernardino, California. Review the Next Steps to find out what else you will need to do to join the Coyote Pack.