I rented a car at the Phoenix Camelback Road location. I reserved it 2 days in advance and paid extra for a guaranteed rental. When my wife got there, they said that they are overbooked and they had nothing to rent. The could not check other locations for available cars in Phoenix. I called the 800 number and they took my number and said that they would call back and they never did call me back. I had to cancel the prepaid reservation. User's recommendation: Do not use Hertz Auto rental.