HORRIBLE customer service. Answer the phone!!!

The customer service was terrible. It took an hour to drop the car off at 10:30 pm. There was only three people ahead of us with two people working behind the counter. There was no simple key drop off. When I got home I realized that I left my kindle fire in the glove box. The next morning I called at 6:30 am when the internet said the rental agency opened. I thought that I could catch them before the car was rented again. No one answered. I called over a dozen times that day and no one ever answered. I stopped by the office twice. The first time they said only one person had a key to lost and found and the manager would be back Monday. I registered the item on the hertz website as directed. They said to come back at 5 pm when there next manager gets there and they might be able to help. When I returned, I waited for an HOUR AND A HALF. I explained the issue to the person at the desk. He said to please sit down and they would check. I waited patiently for 30 min while four guys stood at the desk and appeared to chat. I went up to ask if anyone was looking. They said that they had got busy and hadn’t had a chance. I waited another thirty minutes in a chair RIGHT IN FRONT OF THE DESK. I finally got in line to ask what was going on. After waiting another 30 min in the entire line AGAIN, I had to explain AGAIN why I was there. They said that no one could help me until the ONE MANAGER with the key returned on Tuesday (I was previously told Monday). So why did I wait ONE AND A HALF HOURS!?!?!? I want to speak to a manager, but I cannot get anyone on the phone. Right now I can only assume that someone stole my kindle and are so reluctant to help me.