Logging into the National Bank web site works fine: http://www.nbnz.co.nz/
But it seems that TCL is having issues with the Online Banking site: https://secure.nbnz.co.nz/IBCS/pgLogin
It works fine on my Telecom XT Mobile Broadband card so I know the site is fine, so I've spoken with National Bank and had someone answer within 10 seconds. Reported the ISP Fault here via the Report Faults link. Yet still on hold with TCL 15 mins later :(
Edit: Make that still waiting after 25 mins, They just finished "As time goes by" extended remixed musac version... All I can say is play it again Sam. Since I know they will since I will still be waiting.