To file a complaint and obtain a warrant against a worthless check writer, you must provide the following: (a) the green certified mail card from the U.S. Post Office containing the signature of the individual who accepted the 10-day letter –or- the entire 10-day letter (unopened) if the letter was returned to you unclaimed (click here for a copy of the 10 day notice letter); (b) a LEGAL COPY of the check from your bank (we can not accept a copy of the legal copy); (c) the Affidavit form that must be signed in front of a magistrate (click here for a copy of this form).