I had booked online a rental car for the Christmas/New Year Holiday 2016 in Puerto Rico. Having arrived at San Juan Airport, the car rental company said that our car "did not exist" - as our plane had arrived late. Yes, the plane was delayed, but the car reservation was never cancelled and had been reserved for 9 days! The company "Sold" our rental car to other customers -. Thanks to rentalcars we stood at the airport at 1.30 AM with no transportation and had to pay 3 x the price > 110 dollars/day to even get one of the last rental cars from Alamo. Rentalcars emailed that they "apologize for the inconvenience" and will refund the money. We will never ever use this company again and neither should you.