Booking.com Unauthorized Debit Card Charge

On 12 October 2026, a fraudulent charge from Booking.com for 538.20 CHF appeared on my debit card without my authorization. I did not make any booking on that date, nor did I give anyone permission to use my card or my details. On my bank notification, the transaction appears only as “BKG*BOOKING.COM”, and I have never made any reservation corresponding to this payment. As soon as I noticed the charge, I contacted both my bank and Booking.com customer service and explained that this is clearly an unauthorized, fraudulent transaction. I was told to wait a couple of days, but I am very worried that nothing will be done and that this charge will be finalized despite my immediate objection. I request that this fraudulent reservation be investigated urgently, that the transaction be cancelled, and that a full refund of the 538.20 CHF be issued to my debit card. I also ask that any data connected to this unauthorized booking be blocked and that I receive written confirmation that this fraudulent charge has been completely reversed and that no further debits will be made to my account due to this incident.