http://www.singaporeair.com/en_UK/pl...-service-fees/

Reservations and Ticketing Service Fees


A service fee is chargeable for reservation and ticketing services provided by Singapore Airlines staff.

For US Customers contacting Singapore Airlines US offices, a service fee of USD50 will apply.

For customers (including US customers) contacting Singapore Airlines in other countries, a service fee specific to the country (ranging from USD 25 to USD 75) will apply.

For customers (including US customers) contacting Singapore Airlines in South Africa, a service fee (ranging from USD 100 to USD 400) will apply.


It seems like it was there for quite sometime already.