Unauthorized Transactions Of Nebula

On 21 May, a charge of 49.99 was made via Apple Pay in the name of Nebula, which I did not authorize. I have medical issues and did not approve or knowingly initiate this payment, so I consider it an unauthorized transaction. After noticing the charge, I contacted Apple Pay customer service and I was informed that the transaction is still pending. Despite this, I am very uncomfortable that such a charge appeared without my consent. I request a full refund of the 49.99 amount and the cancellation of any current or future payments related to this unauthorized Nebula transaction. I would like confirmation that this issue has been resolved and that no further unauthorized charges will occur.