Corporate Headquarters 153 West Dave Dugas Road, Sulphur, LA 70665P.O. Box 167, Sulphur, LA 70664-0167337-583-2111Toll free: 1-800-737-3900 Cameron Telephone - Louisiana 153 West Dave Dugas Road, Sulphur, LA 70665P.O. Box 167, Sulphur, LA 70664-0167337-583-2111Toll free: 1-800-737-3900
Cameron Telephone - Texas P.O. Box 167, Sulphur, LA 70664-0167 Toll free: 1-800-737-3900
Elizabeth Telephone P.O. Box 167, Sulphur, LA 70664-0167 Toll free: 1-800-737-3900
Mercury Internet Phone ServiceP.O. Box 167, Sulphur, LA 70664-0167Toll free: 1-800-914-7055
