Diners Club USAProfessional CardsCorporate ProductsClub Rewards and BenefitsCustomer Service

Service is our hallmark. Rest assured.

We're ready to help — whether you're at home or traveling abroad.

Contact us online via our secure comments and suggestion form.

Lost or Stolen Card?

1-800-2-DINERS (1-800-234-6377)
Outside the US: 1-514-881-3735 (collect)
Client Services
P.O. Box 6101
Carol Stream, IL 60197-6101

Cardmember Customer Service

1-800-2-DINERS (1-800-234-6377)
Outside the US: 1-514-881-3735 (collect)

Client Services
P.O. Box 6101
Carol Stream, IL 60197-6101

TTY Service for Hearing Impaired Customers

Professional Cardmembers: 1-866-889-0889
Corporate Cardmembers (US and Canada): 1-866-859-2089
Corporate Cardmembers (Outside North America): 1-800-976-6037

Corporate Program Managers

Corporate Client Services: 1-800-964-9444 (Mon-Fri, 8 a.m. - 8 p.m. ET)

Corporate Sales: 1-800-999-9093

Travel Management Companies

For inquiries and lead referrals please email bmo.sps@bmo.com
or call 1-800-999-9093.

Payment Address

Diners Club Professional
P.O. Box 6012
Carol Stream, IL 60197-6012

Diners Club Commercial / Corporate
P.O. Box 5732
Carol Stream, IL 60197-5732

Overnight Payment Address

BancTec Inc.
2100 A Corporate Drive
Addison, IL 60101

ATTN: P.O. Box 6012 - Professional
ATTN: P.O. Box 5732 - Commercial / Corporate

Wire transfer payment information

Bank Name: BMO Harris Bank N.A.
Account #: 1982143000
Account Name: Diners Wire Payments
Address: 111 W. Monroe
Chicago, IL 60603
ABA: 071000288
Swift code: HATRUS44
Payable to: Harris/Diners Club (include name/account#)
Cutoff time is 2pm CT

Internet Help Desk

1-877-263-5018 (Mon-Sun, 24 hours a day)

Club Rewards

Customer Contact Center: 1-800-234-4034 (Mon-Sun, 9 a.m. - 9 p.m. ET)

Attn: Club Rewards Management
P.O. Box 6104
Chicago, IL 60197-6140

Insurance - Inquiries and Claims

  • Primary Collision Damage Waiver Coverage, or
  • Purchase Assurance and Extended Warranty, or
  • Worldwide Automatic Travel Accident Insurance, or
  • Master Assist
    (US): 1-877-764-3576
    (Outside the US): 904-636-3647 (collect)

RoadAssist Roadside Services

(US): 1-877-764-3576
(Outside the US): 904-636-3647 (collect)


Professional: 1-888-551-4881 (Mon-Fri, 8am - 8pm ET)
Corporate: 1-888-551-4667 (Mon-Fri, 8 a.m. - 8 p.m. ET)

P.O. Box 6002 Carol Stream, IL 60197-6002

Your Personal Assistant can help you make reservations for dinner, tennis or the spa, order tickets for events worldwide, locate reputable repair services, arrange personal services or shop for the perfect gift.

Carte Blanche Cardmembers: Log in or call 1-888-442-2872

Diners Club Cardmembers: Log in or call 1-888-442-2872

All Personal Assistant services are provided on behalf of Diners Club by a third party and are subject to certain Terms and Conditions. Services are subject to change without notice.