If I were you I would contact them and just ask how long it is still going to take. I did this a couple and times and NZQA answered my emails almost every time. Unfortunately it still took quite a very long time for mine to be completed.
Officially you are not allowed to meddle in process. However, it can not hurt to try and get a contact person at the university in the meantime. In my case I eventually asked NZQA if I can help in any way because its taking so long, and they asked for a name or contact person at the university. Once I gave them my contact person's details, the NZQA assesment was finished less than a week later.