Indeed - I had an rather unpleasant experience with SIA desk staff at Changi over the weekend - I've been flying with them for over 40 years and this was the first time
They were within their rights (or rather they just didn't want to help) I guess but it was unnecessary and wouldn't have cost them a cent - I won't forget next time I make a booking to fly east. ANZ on the other hand went wayyyy above & beyond to assist