Consumer Complaints | Illinois Commerce Commission
Resource Name:Consumer Complaints | Illinois Commerce Commission
address
160 North LaSalle, C-800, Chicago, IL 60601
Eligibility
Residents of Illinois
Required documents
Utility bills
Proof of residence in Illinois
Additional documents may be required.
Hours
Monday to Friday, 8:30 am - 5:00 pm
800-524-0795
Voice
·Consumer Services (Toll-Free)
888-261-4188
Voice
·TTY
217-782-4654
Voice
·Transportation
217-782-2024
Voice
·Out-of-State Callers
Website
https://www.icc.illinois.govLanguages
English, Spanish.
Application process
(1) File an complaint on the website, by calling 1-800-524-0795 and following the prompts, or by United States Postal Service (USPS) mail. (2) For Transportation questions call 217-782-4654 and press '7'.
Fees
No Fees
Service area
All ZIP Codes, IL
Provides informational and related resources about public utility services and accepts consumer complaints.
Last Assured
06/30/2026
What's Here
Providing organization
Illinois Commerce Commission
Provides informational and related resources about public utility services and accepts consumer complaints.