Terrible service from Trivago

Currently we on holiday in Cape town..we were looking for accommodation on trivago which we trusted because of all the adds we see...we found a place in bloubergstrand. Trivago told us there is still room available and we can book it we want to. We booked and we got a reference number telling us the room has been booked for 2days. Check in time at 4. We uber over 120km to get to the place and was charged over R900 for the trip. We get to the place and the lady told us they fully booked and never got any reservation for us. We showed her the reference number and she said she has been fully booked since yesterday. Upset as we were we had to drive back to where we came from which was another 120km and paid over R900 again. How the hell can trivago tell us that there's is space yet there isn't. Is that the kind of buss u r running. M very dissappointed and will never use trivago again as it's false advertising. People will know about this !