To speak to a representative:
Toll-free 1-800-664-5463
M-F 7:00am to 6:00pm and Sat 8:00am to 12:00pm (closed Sunday)

Emergency Service Only:
To report a gas leak, fire, or explosion
Toll-free 1-800-458-4251
24 hours a day including holidays and weekends

Mail correspondence to:
Oklahoma Natural Gas Company
P.O.Box 401
Oklahoma City, OK 73101

Mail payments to:
Oklahoma Natural Gas Company
P.O. Box 268826
Oklahoma City, OK 73126

or

Oklahoma Natural Gas Company
P.O. Box 1234
Tulsa, OK 74186