Booking.com, Unauthorized Booking Put A Loan In My Name, Request Cancellation

I recently discovered an unauthorized Booking.com reservation that appears to be linked to an Affirm credit, and I am requesting that this booking be cancelled and the financing fully reversed as soon as possible. Today I received an email from Affirm showing a new credit for 752.89 USD, with a total repayment amount of 824.11 USD, even though I never made any such booking on Booking.com and did not authorize this transaction in any way. There is no booking date shown in the Affirm email, and I have no corresponding reservation or confirmation in my Booking.com account that I recognize as mine. As soon as I noticed this, I contacted Booking.com customer service and also reached out to Affirm to report that this transaction and booking are fraudulent and unauthorized. However, I have not received any response from Booking.com yet, and the Affirm credit is still active in my name. I request that the related Booking.com reservation be immediately identified and cancelled, that the Affirm financing of 824.11 USD be voided or fully reversed, and that any negative impact on my account or credit profile be prevented or corrected. I also ask for written confirmation that the unauthorized booking has been cancelled and that I am not responsible for any charges connected to this incident.