Yes, you can pay over the counter at any NZ Post outlet with Kiwibank.
Please bring the following details:
Bank Name: Kiwibank Limited
Branch: Kiwibank Business Centre, Wellington
Payee Name: MyHost 2009 Limited
Account Number: 38-9009-0673480-00
Please put the reference number as your invoice number.
Often the Post Office may not put a reference number when making payment. As a result, please ensure you receive a receipt for your payment.