Oh, Sue how disappointing for you, I can imagine you are gutted.
I'm sure you will get something. If I were you I would wait until the very last minute to book a cheap flight, you won't have a problem finding accommodation.
www.xl.com offer some great last minute deals. They usually start dropping the prices 7 days before the flight leaves, remember and type 'telegraph' into the special offers box to gain futher discount.
I've not yet booked my flights for next Friday, the price dropped 35quid each yesterday, but I'm hanging it out for a better deal!
Good luck and let us know how it goes.
Eileenx