All Illinois Courts must accept these forms. Contact our Chicago loan enforcement lawyers if you need help collecting money owed through a secured or unsecured loan in Illinois.This Easy Form makes a Small Claims Complaint you can use to sue a former landlord to return your security deposit. Cost to file the form: None. Special information or papers needed to complete the form: • Illinois Attorney General Identity Theft Affidavit available here:. The first step in addressing an unpaid debt should be to send the debtor a formal demand letter. An IOU ( I Owe You ) is a legal document that sets out the details of a loan made between two people, a borrower, and a lender. How do I know if a debt is secured, unsecured, priority, or administrative, so I can fill out my schedules correctly? The information you provide in the affidavit must be true. Who must complete a Financial Affidavit?