I had a similar but less constructive discussion with NRMA last year concerning one of my other cars. They tried convincing me if I raise the voluntary excess, I could equal (bring back down) the premium to that of the previous year's rate.
At that time I think I provided the phone agent a quick lesson in math, and subsequently removed all my business with them.
They seem to make you work to retain the same premiums as the year before instead of premiums automatically going down over time as your car depreciates. Then they make you think it's a good deal.
When I started ringing around, I got the impression 'new quotes' seemed more competitive than 'renewals'.
