Originally Posted by
pogonation
Sounds to me like another person with the same name booked a stay at this particular hotel and then someone at Hyatt has linked the reservation to what they thought was his GP account (they probably searched for the GP account by name and didn't check DOB, address etc.).
Yes, I agree. This appears to be the case, but I have not heard back yet. I will follow up when / if I hear back.
Nonetheless, this is a concerning event, and I spent over 2 hours out of my working day following up on this.