Once a goodybag or gigabag is active, it is not possible to cancel or modify it. All goodybags are valid for a month but it's possible to buy another goodybag before it expires if you run out of minutes or data. Your goodybag purchases can be found on the Payment history page.
Recurring goodybags are the most comfortable option as it allows you to purchase a goodybag automatically every month. This way, there is no chance you'll find yourself without a goodybag.
It is possible to buy a goodybag in advance which will start as soon as the existing goodybag expires, we call it a queued goodybag. It is possible to cancel and edit a queued goodybag at anytime before it goes live.