Tried the ticketing office again to inquire about amendment to flight information. Our helper no longer work for us and we had to change name for a replacement helper on the ticket.
The staff informed us that name change on the ticket is no longer permitted. When pressed for suggestion or alternative, there is none - suggesting that the ticket we are holding is as good as garbage.
I called CASE Singapore to ask about protection under Lemon law. Unfortunately, Lemon law covers only goods but not services.
All in all, consumers are left handicapped in a lopsided airline vs consumer deal.