Car good. Pick up good. Return awful. Almost missed plane

Drop off at Orlando Sanford airport was awful. Pouring down rain pulled up car no one from Thirfty rent a car in sight. Sign said to leave keys in the car so I did. I was so worried that this is all I needed to do. Got on my plane and tried to call thrifty could not get through to the location. Finally called the roadside service just to get a person. They went into the computer and told me it was OK to leave the car there with the keys. Terrible terrible customer service at pick up I was completely wet from running back-and-forth to the car. No help from thrifty