Child Support Enforcement Division Address: 2121 Rosebud Drive Suite E Billings, MT 59102 Phone Number: (406)655-5500 Website: http://www.dphhs.mt.gov/csed/index.shtml Hours of Operation: Monday-Friday 8AM-5PM Eligibility: Anyone can apply Services Offered: Provides child support enforcement for Montana residents. This includes establishing paternity, … Continued