FAQs on our offer
Frequently asked questions.
Here are the questions our personal and corporate Cardholders ask most frequently.
Questions and answers on our cards
Questions and answers on the TravelPASS/ Travel Account
Questions and answers on our online services
If the FAQs have not answered your query, please call our Customer Service Centre on Telephone +32 (0)2 626 50 24.
Alternatively, send us your query
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.