We'd hate to see you go :( but we understand if you may have other considerations. You can cancel anytime but do remember to cancel before the next billing date. The billing date is determined by the date that you signed-up. (i.e. If Ali signed-up on 15 Apr, he will be next charged on 15 May).
To cancel, all you need to do is:
Thereafter you will receive an email confirming your unsubscription from BoxGreen.
You will not be re-billed and sent any more boxes once your subscription ends.