Refund required - ASAP!!!!!!

I made a booking at a "Guest House" in Orkney for Saturday, 13 February and paid Booking.com the amount they requested. I received a confirmation number and pin and thought that my booking had been finalized. On Saturday I contacted the Guest House to confirm my time of arrival, but the lady said that she neither received my payment nor confirmation of my stay. She then told me that I can stay there, but I had to pay R250 cash, as they NO LONGER USE Booking.com. At 21h00 I went to the Guest House and I was disgusted! There was no private room for me, but only a room - IN THEIR HOUSE!!! I did not stay at Bamboo Nest Guest House that night, and had to drive and phone around, looking for another place to stay and paid R690. I need Booking.com to REFUND me the R293 back that I paid. Utterly disappointed that Booking.com has properties/listings on their website, although the properties no longer use Booking.com's system.