At what stage were you notified the flights were not available?
At the very final step. It all looked great through out the process of booking the flight, my dates where there, numerous flight options where there, I selected my fights and paid the fee and hit "confirm" and then the OOPS screen appeared stating that the flight was, in fact, not available.
I tried the same thing a few hours later and had the same thing happen so I called an agent and she confirmed that they were seeing no availability as well