Get In Touch Call. Email. Visit. Phone +64 7 839 9957 (Office) +64 21 411 341 (Field Officer) Email info@nzhfa.org.nz Office 23 Vialou St PO Box 9282 Hamilton 3240 New Zealand Office Hours 8.00am-5.00pm, Monday to Friday Message.Email us straight from the form below. First Name (required) Last Name (required) Email (required) Phone Subject Message Please leave this field empty.