Cardholder
We help you
Tel: 0820 820 536 from France (0.12 € TTC/minute) or +33 1 70 75 51 16 from other countries
Fax: 0820 000 413 from France (0.12 € TTC/minute) or +33 1 70 75 51 05 from other countries
Monday to Friday 8 am to 6 pm
You can also send us your queries and comments by e-mail to diners.customerservice
citi.com
Please remember to quote your Diners Club account number in all correspondence.
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!
Card-blocking service (24 hours a day, 365 days a year)Tel: 0810 314 159 * from France or +33 1 70 75 51 18 from other countries.