But they have an issue with their credit card verification process.
As stated earlier, I tried (several times) a c/c from Chase and another one from Citibank. Both were "declined", but I called both banks and they had no record of a charge attempt by Garuda.
On the other hand, no issue whatsoever with the payment process on the Air Asia website.

I hope that representatives of Garuda read posts on websites like FT, because they certainly do not get their information from emails, as they do not provide an email address, for their customers.
I have never flown Garuda, but, obviously, this experience does not give me a good opinion of the airline.