- Call by telephone
- Send a fax (802-864-5564)
- Use an online form below
- Send an email to: firstname.lastname@example.org
- Send a letter by U.S. Mail: GMT, 15 Industrial Parkway, Burlington, VT 05401
- Visit a GMT office in person
Whether our customers are submitting complaints about service problems or sharing a great experience, we welcome the opportunity to be of service.