I called once and got a person right away. I'd had a problem confirming my shipping address and it was resolved. I emailed later, however, to double-check. The person who answered the phone had a very strong accent, and I wasn't sure she completely understood my question.
Also I am sort of obsessive about correct grammar and punctuation (ESL teacher) and was bothered by this disclaimer at the bottom of my email:
"If your package is being shipped to an address outside of the United States, your package was sent as a gift, and it will pass through international customs and may still be subject to additional delay and duties or taxes. "