Cardholders
We help you
Diners Club Customer Service - Monday to Friday 08:00 – 18:00
Tel: +32 (0)2 626 50 24
Fax: +32 (0)2 626 60 26
Email: diners.customerservice
citi.com
Card-blocking service (24 hours a day, 365 days a year)
Tel. +32 (0)2 626 50 04
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!
Please remember to quote your Diners Club account number in all correspondence.