You need to contact the retailer directly. If the retailer has gone into liquidation you will need to contact the liquidator directly. You can find out who the appointed liquidator is by checking the Companies Office Register and searching the company name at https://companies-register.companiesoffice.govt.nz/
Insolvency.govt.nz also has helpful information on what to do when you are owed money or awaiting goods/services including what supporting information/documentation you may need to provide the liquidator.
Please contact our customer service team if you require confirmation of your Long Term Finance purchase or a copy of your statement and we will be able to help you with this.