[URL Removed] and HERTZ let me down in Puerto Ric

In December 12, 2015 [URL Removed] accepted my reservation request (Booking Reference Number: ***), which presupposes not only the existence of the offered vehicle as well as its availability for the requested period (Dec 26 to Jan2).<br> At time of booking I made an advance payment of the fees ($ 361.00), which was immediately charged in my credit card.<br> Before the trip, I received a number of messages with the offer of an \upgrade\" to change the car reservation for a bigger car which, consequently, would make me incur in greater expense. This fact (upgrade offers) , incidentally, presupposed the existence and availability not only of the vehicle reserved by me but also other vehicles availability, ie this insistent offer presupposed the existence and availability of even more vehicles for the period.<br> By the pick-up day and time of the reserved vehicle (Saturday night - 7pm), I was told by Hertz employee that there were no vehicles available (??????). As absurd as this fact (shortage of vehicles even reserved and prepaid) is the non-receipt of any prior notice by [URL Removed] or HERTZ