American Express Customer Service and Support American Express offers 24/7 customer service for many of its banking products. Some of its products don't have 24/7 phone lines, but they usually ...

American Express Merchant Services delivers payment ... I then called their 24-hour customer service (terrible idea) and got the runaround from them multiple times. I was advised to email "the ...

American Express's website contains a potentially serious security glitch that is causing at least one customer's username and password to show up in URLs on the site, CRN has learned. Brett ...