Traveler Contact Information Your organization's travelers can call on Diners Club for and get an actual person, not a machine, to assist them. Whether they're calling to check a balance, need urgent assistance or have other questions, we'll give them our full attention and provide the help they need. Most of these contact numbers are available 24 hours a day, 7 days a week. Customer Service 1-800-2-DINERS (1-800-234-6377) Outside the US, call collect 1-702-797-5532 Online Statements Help Desk 1-877-263-5018 Automated Service Line 1-800-729-5309 Club Assistance® 1-800-DINERS-911 (1-800-346-3779) Outside the US, call collect 1-702-869-4927 Club Cash®/ATM Locations 1-800-CITI-ATM (1-800-248-4286) Outside the U.S., call collect 1-702-869-4927 Club Rewards® Service Center FAX 1-800-234-4034 8am - 10pm EST 1-800-260-4034 Travel Accident Insurance Inquiries Claims 1-800-237-4365 1-800-2-DINERS (1-800-234-6377) Outside the U.S., call collect 1-702-797-5532 Rental Car/Excess Lost Baggage Insurance Inquiries and Claims Outside the U.S., call collect 1-800-613-5975 1-302-672-5150 Payment Address Diners Club P.O. Box 6009 The Lakes, NV 88901-6009 Overnight Payment Address Diners Club Attn: Payment Processing 8725 W. Sahara Avenue The Lakes, NV 89117-1814