We're sorry to see you go! If you have any feedback about what you didn't love about the ASICS Studio experience please pass it along to support@studio.asics.com, we're always trying to improve and your feedback is essential in helping us do this.
If you'd like a refund on your subscription purchase this should be done through iTunes since Apple processes and handles all subscription payments. First you'll want to login to your Apple ID and cancel the subscription. For the specific steps on how to cancel a subscription check out this article from Apple's help center. You'll also need to request a refund from Apple. Here is the link where you can contact Apple and request a refund. Follow this flow: iTunes > iTunes Store > Purchase, Billing and Redemption > Apple ID Account Billing. Finally, just make sure to add in your order/receipt number and briefly explain your issue.