RealDrama Unexpected Facebook Subscription Charge and Cancellation Request

I accidentally subscribed today, through Facebook, to content related to the series “A Bride for Our Secret Billionaire Dad.” I did not intend to start a paid subscription and only realized the mistake after it was activated. I am requesting that this subscription be cancelled immediately and that any fee charged today for this mistaken subscription be fully refunded. I would like confirmation that the subscription has been terminated and that I will not be charged again in the future.