Please access your Stripe dashboard as disputes and refunds are handled through Stripe.
Under "Payments", you may find an overview of all your payments. The filtering option will also allow you to view failed or disputed payments.
Visit this page to learn more about how disputes and refunds are handled: https://support.stripe.com/topics/disputes
If you have any questions regarding a failed payment, refund request, or payment dispute, please consult Stripe support by visiting the following link: https://support.stripe.com/