My friend's account was locked after transferring CC points to SQ and then trying to book a ticket for my friend and a companion. It's probably either due to (a) booking for a nominee (recently added) or (b) one account having a middle name and the other not.

I can understand Singapore keeping an eye out for fraud. But it's already taken a week, with no communication and no end in sight. In this case, it would take a reasonable person only a minute to realize there's no fraud.