I forgot to post about this but sometime ago while having a chat with a co-worker, she mentioned that she got some $800 back from IRD. This money was from 10 years ago that had something to do with insurance. It's too long ago for me to remember the details but it came from the company where she used to have an insurance policy with.
I went on the site to have a look. Sadly we're not there but I'm not surprised because we file our taxes every year as to not miss on refunds. However, I was shocked to see individuals being owed thousands of dollars! What a windfall!
Check your name out at IRD's Unclaimed Money's site. You just might get some!