Hotel Sky scammed me of R550

So I booked a room a Hotel Sky in the early hours of Saturday morning to catch some sleep before sunrise and avoid driving home tired. Then I get told I must pay an extra R550 because check-in closed at 14h00? Seemed very odd and was disappointing but I had to pay anyway. I asked them to show me these terms and conditions on booking.com where I had made the booking but they could not.