こちらにメールアドレスもあります。

https://workandincome.govt.nz/products/a-z-benefits/employer-questions-and-answers.html#null

Employee concerns
What if I have a complaint about how my employer has paid me?

If you have a complaint because you think your employer is breaching any of their minimum employment obligations to you, you can contact Employment NZ by calling on 0800 20 90 20 or by email at info@employment.govt.nz.

https://www.msd.govt.nz/form/msd/govt/nz/form.req2?requestType=msd-govt-nz-select-form-v1

ここで、メール通報できます。wage subsidyを選んでください。

電話は多分、繋がらないので。。。