Customer Service:

Email: Support@TSL.org

Phone: 1-800-245-5445 or 1-406-848-9500.
En espanol: 1-406-848-9501

Leave a message 24/7, or speak with a Customer Service representative:
Monday, Tuesday, Wednesday and Friday: 9:30 a.m. - 12:30 p.m. and 1:30 p.m. - 5:00 p.m.
Thursday: 10::30 a.m. - 12:30 p.m. and 1:30 p.m. - 5:00 p.m.

All times are USA Mountain Time. To compare with your local time, visit time zone converter

Fax Customer Service: United States: 1-800-221-8307, International: 1-406-848-9555
Postal Mail:
63 Summit Way
Gardiner, Montana USA 59030-9314