Having had to wrestle a bit with 2Degrees over losing a discount, this year I merely messaged them through the website. They offered to maintain both my $10 bundle discount and $10 discount for a 12 month terms. And, the plan price has dropped by $5 a month - so we'll pay $86 a month rather than $91. Sweet!
Now we just need hyperfibre (here in New Windsor Auckland) :) :)