American Express

Phone: You can reach American Express customer service by calling either (800) 528-4800 or (800) 383-4800. These lines are open all day, every day, and are for people who already have an American Express card. Online Chat: If you prefer to chat online, just log in to your American Express account and click the blue "chat" box in the bottom right corner to talk to a customer service representative.

American Express customer service is available 24/7.

To update your details on your American Express US account, follow these steps:

1. Log in to your American Express account on its website.
2. Navigate to the "account settings" or "profile" section.
3. Look for options like "edit profile" or "update account information."
4. Select the details you want to change, such as your address, phone number, or email.
5. Follow the prompts to enter your new information.
6. Review and confirm the changes before submitting.
7. You may need to verify your identity through security measures like entering a code sent to your phone or email.
8. Once confirmed, your details will be updated in their system.

If you encounter any issues or need further assistance, you can contact American Express customer service for support.

To close your American Express account, here's what you can do: Phone: Dial the number on the back of your card. If you're outside the US, call collect at 1-336-393-1111. If you want to cancel your corporate card, you might need to reach out to your company's program administrator. Online Chat: Log in to your American Express account and click on the blue "chat" box at the bottom right to talk to a customer service representative. Remember, your account must have a balance of zero to close it.