Help and Support


How do I dispute a Standard transaction?

If you identify an unauthorised transaction on your account, call us straight away on 0800 500 450 from NZ or +64 9 580 7365 from overseas. For peace of mind, you can also temporarily place your card on hold by logging into My Account so the card can’t be used.

If you wish to dispute a Standard Purchase or cash advance transaction (e.g. charged an incorrect amount, services not provided, goods not received, ATM has disbursed the incorrect amount of cash) you will need to complete a Notice of Disputed Transaction form.

Please return the completed Notice of Disputed Transaction form and any applicable supporting documentation to [email protected], or alternatively via post to: Hummgroup Chargebacks and Disputes, PO Box 94013, Auckland 2241, as soon as you identify the disputed transaction.

Once your documentation has been received, it may take up to 30 days for us to respond and confirm whether additional information is required.

For any travel related disputes please contact the relevant merchant to seek assistance. The merchant will take action and deliver the appropriate outcome as stated in their terms and conditions.

Need more help?

Call us

You can contact our call centre during the following times: Monday - Saturday: 8.30am – 6pm
Sunday: closed

If you’re trying to contact us from outside New Zealand, please call +64 9 580 7365

Write to us

If you would prefer to contact us in writing, then please send your correspondence to the following address:

Columbus Financial Services Ltd
Private Bag 94013
Auckland 2241

Things you should know

Earn 1.50 Flight Centre Rewards for every NZ$100 spend on Standard Purchases (excludes cash advances, balance transfers, fees, interest charges & quasi-cash transactions). Earn 3.00 Flight Centre Rewards for every NZ$100 spent in-store or online at a New Zealand Flight Centre store. When redeemed, every 1.00 Flight Centre Reward earned will equate to NZ$1.00 credit towards your Flight Centre Mastercard account.

A minimum purchase amount may be required. An Establishment fee of $55 applies to your first LTF transaction, a $35 Advance Fee applies to all subsequent LTF transactions. Standard Interest Rate, currently 24.99% p.a. applies to any outstanding balance at the end of a payment holiday or interest free period. Lending criteria, fees, terms and conditions apply. Rates and fees correct as at date of publication, subject to change.