Citi credit card | Cardholder's Dispute Letter (CDL)

 To dispute a Citi credit card transaction via email, you need to fill out and sign a Cardholder's Dispute Letter (CDL), then submit it as an attachment to the email address vncarddispute@citi.com. 

Here's a more detailed breakdown:

• Use the CDL: A valid dispute request requires a duly filled and signed Cardholder's Dispute Letter (CDL).
• Email Address: Send the CDL as an attachment to vncarddispute@citi.com.
• Registered Email: Ensure you use your registered email address to submit the dispute.
• Purpose of Email: This email address is specifically for retail-card-transaction-dispute purposes.
• Other Requests: Any other requests, such as canceling/blocking a card, fee charges, or checking a merchant's address, should not be sent to this email address.
• No CDL, No Dispute: Dispute requests without the CDL will not be processed.
• Hardcopy Request: You may be requested to submit a hardcopy of the CDL when necessary.