If on a Monthly Subscription, you can cancel at any time. Cancelling will cancel future payments and future boxes - this will not impact your Black Friday order using code FRIYAY from being shipped.
If you subscribed from the 19th-21st November (your first box is November) - and if you do not wish to receive the December box - you will need to cancel before the 1st December to avoid being rebilled for the December box.
If you subscribed from the 22nd November - 30th November (your first box is December) - and you do not wish to receive the January box - you will need to cancel before the 1st January to avoid being billed for the January box.
ANY cancellation that takes place on the 1st or after will result in you being billed and the respective months box being shipped to you.