If you hold a card that is not listed, you are still able to call the phone numbers listed or call the number listed on the back of your card for. Just dial American Express toll-free helpline number and American Express executives shall be at your service on all days of the week. We do not provide any customer support ourselves. Find the Correct American Express Phone Number for Your Account Type. The best American Express phone number with tools for skipping the wait on hold, the current wait time, tools for scheduling a time to talk with a American Express rep, reminders when the call center opens, tips and shortcuts from other American Express customers who called this number. File a complaint with American Express customer service department. When calling the Customer Support number, you will hear the following automated respons. Customer-service.xyz provides contact details for leading companies and websites. Below given are the customer support phone number of American Express customer support. The automated rep with ask you what you need help with.