Contact Diners Cub Customer Service Team

call us on 0800 346 377Call us

 General enquiries: 0800 346 377

 Lost/stolen card: 0800 657 373 or call collect (+64) 9 359 7796
 Merchants: 0800 280 544

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If you have a complaint about a product or any part of our service please contact us. We are keen to resolve any issues as quickly as we can and clear up any misunderstandings. We have an internal complaint handling process in place to help resolve any complaints, read more...