Okla. Admin. Code § 165:56-10-7
Whenever service to any customer is inoperative, other than by reason of negligence, or willful act of the customer, or causes beyond the control of the reseller, and the service remains inoperative for more than twenty-four (24) consecutive hours after being reported by the customer or having been found to be interrupted by the reseller, the reseller shall refund, upon request of the customer, the prorated part of that month's monthly charge(s) for the period of days during which the telephone service was not provided. Credit shall be identified on the bill. The maximum credit during a single billing period shall not exceed the amount of toll charges and monthly recurring charges. The refund may be accomplished by a credit on the next bill. The reseller shall have no other liability for service interruptions.
Okla. Admin. Code § 165:56-10-7