The decision to charge, or not charge a person with a crime is something that the police department does not have control over. While we may accurately document the facts of a crime, including your statements and make a logical identification of someone as being responsible, it is ultimately the decision of the District Attorney to decide to file a criminal complaint, or not. These decisions are not whimsical, and are more a product of evaluation of evidence, probability of gaining a conviction, and the overall administration of justice. If your case was not filed, you should contact the officer or detective involved and discuss the matter with them. They may also be able to share with you the rationale, if provided, of the District Attorney’s declination of complaint.