Earlier this week someone posted this to the blog comments:

I am BEYOND frustrated with your website.
I can find NO WAY to contact customer service except via telephone!!!
There is no email anywhere under CONTACT US.
There is no online 'chat' type of service either.
Have you never thought you might have a HEARING IMPAIRED customer that cannot use a PHONE? [...]

This was an excellent question, and today I received this note from the Customer Service team:

I am completing training of our agents today for the TTY system... I have tested the line through a TTY service, and the line is functional. The number that will be used for TTY Customer Service is 1-866-402-2619.

So there you have it. I believe it is also being posted on the Netflix website and FAQs as well. Thanks for the feedback.