First, please make sure that you are using the correct Apple ID information related to your purchase.
You will be able to recognize the Apple ID used to subscribe by searching for a confirmation email/payment receipt in your email inboxes.
Apple maintains a very strict data security policy and does not allow access, manage, cancel, or refund your subscription for you.
As a result, we cannot manage customer refunds. To submit your refund request you must do so through Apple.
Apple often gives customers reimbursement within 90 days of purchase. We suggest sending an initial refund request here.
If you are unable to cancel, have issues soliciting a refund, or ask for further information about your account, please contact Apple here.
You will be able to message directly an Apple support agent and discuss your case.