We redeemed 2 flights from BNE to LHR via SIN. All great. We then went to select seats and find we could get 2 from BNE to SIN but none are left on the 12 midday flight from SIN to LJR. The SIN -> LHR flight is Saturday of next week and we called up Customer Service and they laughed and said hopefully some will become available before then . I was not in a jovial mood after he said this. What happens now? SIA are saying that all seats are taken and that they allow an 'overbook' to happen...needless to say we just hope we get a seat. I suppose we will get shoved into the back 'coughpy' seats in the back row after the top $$$ are bumped into Business Class???