If you have any queries, or require any additional information, please contact us. Customer Service Phone 0800 500 505 Lost and stolen cards - 24 hours every day 0800 242 273 Hours of operation Monday to Friday - 8:00am to 6:30pm Write to us Gem PO Box 4058 Shortland Street Auckland 1140 Registration Support Help with online registration or logging on call 09 975 6010 Email Email us at gem.nz@gemfinance.co.nz