On July 18, 2025, I was fueling my vehicle at COSTCO. I put my vehicle in park, exited and left the door open while I waited for my credit card to clear so I could start fueling my vehicle. I was out of the vehicle for about a minute when the vehicle started to move backwards. I was standing between the open door and the drivers seat and was startled when it began to move. I was hopping on one foot trying to get back into the vehicle. Ultimately, the open door hit a column at the station. There was damage done to my door. There was no warning that made me aware that the vehicle wasn't still in park and there was an impending issue.