July 24, 2017 13:23 Updated Follow Please open a ticket with IOT Customer Service Desk. Your ticket will be assigned to the Billing Team. You may also contact us by phone at (317) 234-4357 (Local), or (800) 382-1095 (Remote calls). Related articles Need Help? Have problems? Who do I call? What Agency? Can I buy a state telephone directory (s)? What are the IWM hours of operation? Where do I mail my personal property forms? What is critical infrastructure?