If you’ve been victimized by fraud, deception, or unfair methods of competition, the Consumer Protection Division of the Illinois Attorney General’s office may be able to help.
http://www.illinoisattorneygeneral.gov/consumers/index.html
Consumer Fraud Hotline: 800-386-5438
The Illinois Commerce Commission's Consumer Services Division provides assistance to consumers in the resolution of informal complaints with regulated utilities and other entities.
https://www.icc.illinois.gov/consumer/
Complaint Hotline: 1-800-524-0795