Be careful - there's no way to stop their billing (Singapore)

IMHO, Internations is mostly hype and a money machine for the organizers. Getting out of their clutches requires pretty good detective work in finding the way to do that. I imagine they rely mostly on people not figuring it's worth the trouble of discovering how to stop the billing. My experience has, obviously, not been great. "Just You Try to Stop the Credit Card Billings" is an interesting game to play, but time wasting.