Drama Shorts Subscription Cannot Be Found or Cancelled

I recently started a subscription to the service called “Drama Shorts” via Facebook around 19–21 June. Although the amount has already been charged to my bank account, I cannot find this subscription listed under my Apple subscriptions, and I also cannot locate any clear option through Facebook or the app to manage or cancel it. Because there is no visible way for me to access or cancel this subscription, I am unable to stop future charges or check any details about it. I have tried to find contact information or a support channel for Drama Shorts but I have not been able to find any way to reach customer service. I request that my Drama Shorts subscription be cancelled immediately and that I receive a written confirmation of this cancellation by email at fr***@mac.com so that I know no further payments will be taken.