Sorry, but no refund is possible in this case. If you do not cancel your Boosteroid subscription, it will be renewed automatically. If you don't want to renew your subscription and pay, you should cancel it. Please, cancel your subscription at least three days before it expires.
Here's an example: January 1 - you buy a monthly subscription. It will be automatically renewed on February 1 and its price will be charged from your bank account. If you don't want to renew your subscription, you should cancel it before January 29. You can cancel it even the same day you buy it (on January 1). Regardless of when you cancel it, you'll still have access to games till February 1, but on February 1 your subscription will not be renewed and you will not be charged.
Should you need assistance, reach us at firstname.lastname@example.org or in the support chat available in the lower-right corner of the boosteroid.com main page.