Email seemed to be the best way to contact them. Even when I call in they often have to say the nyc branch will get back to me by email.
I've used it around a bit. No problem in person but first try at amazon was a complete failure. Called in, and as usual they said they saw the denial but aren't sure why. They'll "get back to me". Lol
Expect a CS slog for everything u do on this card.