How do i contact northnorth star? North Star can be contacted in a number of ways: You can call us on: 03000 11 00 11 You can email us by clicking here You can comment, compliment or make a complaint by clicking here You can contact us on facebook by clicking here You can tweet us by clicking hereHow do i contact northstar business development center? To Contact Our National Business Development Center, please call 303.562.1820. A complete list of our Branch Locations may be found here. Have a safe and productive day. NorthStar Group Services, Inc.How do i contact northstarmutual? For general information or questions, email us at [email protected] For information on Careers or Job Postings, visit the careers page. For Roadside Assistance contact Information or reimbursement procedure, click here. To view the contacts for each department , click here.How far is northstar from the border? North Star is located one hour from the Canada-United States border via the modern Bluewater border crossing at Sarnia, Ontario-Port Huron, Michigan.