Oklahoma doesn't have a specific auto-renewal law, but the CPA (no specific auto-renewal law) (Okla. Stat. tit. 15, § 751) plus federal FTC rules protect your right to cancel.
Okla. Stat. tit. 15, § 751
Penalties: Actual damages plus attorney fees
SubScrub automatically cites Okla. Stat. tit. 15, § 751 and federal laws