Why me?

May I ask why do people insist on getting the price of a car rental when
I tell them I am sold out? Then they have to argue about whether I
really do have cars or not. Not without a reservation, I explain. Next,
they demand to know who does have cars to rent? I glance down the
counters at the Cars Available signs with the agents standing next to
them. I say the next company over without a customer in front of the
counter. Finally, they say thank you and walk the opposite direction I
directed them to. Weirdoes.