The following are phone numbers which may or may not be legitimate American Express numbers. The pattern seems to be that the caller leaves a message identifying themselves as being from American Express and asks the customer to return the call about a very important business matter. American Express, however, is unable to state whether the numbers are legitimate.
- 210-232-3974 - caller ID on call; caller left the number 866-231-9049
- 866-231-9049 - number left by caller from 210-232-3974
- 888-892-6180 - "Susan Marlowe"