Cardholder

We help you

Customer Services - available Monday to Friday 08.00 - 18.00

Private customers
Telefon +31 (0)20 654 55 00
Fax +31 (0)20 654 55 04
Email diners.customerservice@citi.com

Corporate customers
Telefon +31 (0)20 654 55 14
Fax +31 (0)20 654 55 06

You can also send us your queries and comments electronically.

Card-blocking service (24 hours a day, 365 days a year)
Tel. +31 (0)20 654 55 11
Please contact us immediately in case of loss or theft of your Diners Club Card. We will provide you with a replacement card wherever you are in the world – and of course free of charge!