On 6/17 I reserved a rental house near Yosemite for the weekend of 7/17-19 and received a confirmation email. In addition, I received a confirmation from the property manager with a request to provide vehicle information before the reservation dates because the house was in a gated community. Seemed reasonable that the property manager had the correct dates. On July 2nd, Booking.com charged my credit card for the full rental amount. 7/8 I sent the vehicle information to the property manager and immediately received a reply that the house was reserved by someone else through another website because Booking.com's calendar put down the wrong dates in his reservation system. The property manager told me he has had many problems with Booking.com before. Booking.com received the notice of conflict from the property manager the same day 7/8, then Customer Service sent me an email informing me of the problem and a link to other accommodations that were completely unsatisfactory for the size of our group. I email CS back asking for other options, never received a reply. Next day sent two emails requesting a full refund, a week later still have not received a reply. If you dare to use Booking.com, make sure you know your Credit Cards dispute phone number because there is a good chance your going to need it and have a plan B.