I wrote about my experience on my site:
I read your blog. Did it occur to you to actually ring their helpdesk? If you ask me using twitter or replying to an automated text are entirely innappropriate methods of actually requesting help.
Just checked 2degrees website, wouldn't you know it they don't list twitter, facebook or texting in their methods for getting customer service! There's a phone number and hey, a helpful page if you didn't recieve your chinwag sim: http://www.2degreesmobile.co.nz/web/guest/lost-sim