Increasing prices on confirmed booking afterwards

I made a booking through [URL Removed] at St Francis Bay Holiday Villa for 28 Dec 2016 - 6 Jan 2017 and received the confirmation of booking. The rate was advertised on [URL Removed] as \deal of the day"and \""only one unit left\"". The next day I received a mail to state that the establishment feels that the rate is too cheap and that I now need to pay the higher rate or cancel the booking. How can this be right? Where is the consumer protection? How can [URL Removed] and the establishment change rates on confirmed bookings after the fact? If I cancelled the booking I would have had to pay the establishment 50% of the full amount. <br> I do not want to cancel the booking and feel that [URL Removed] and St Francis Bay Holiday Villa are trying to take the easy way out after making an \""honest mistake\"""