I went to the counter and while they had my reservation, I was told they wouldn’t give me a car. They took more reservations than they had vehicles, and so the woman at the desk said they weren’t going to honor any bookings made that day.
It seemed like Hertz should have done more than just told me I was out of luck. If they didn’t have cars, they shouldn’t have given me a reservation. And if they weren’t going to honor the reservation they should have tried to take care of things some other way.