Third Party Subscription

I have Hulu billed through Xfinity. I no longer have X1, Xumo, or Flex — I have Xfinity Internet only. Hulu has confirmed that Xfinity is the billing party, and Xfinity phone support told me they cannot cancel it. Xfinity’s current Hulu support page says customers without an X1/Xumo/Flex box can contact Xfinity to cancel a Hulu subscription billed by Xfinity. Please have the appropriate billing team manually cancel Hulu and confirm the cancellation date and that I will receive no further Hulu charges.