Originally Posted by ned

I was declined by Amex at a gas station several months ago and called Amex. They said I had two gas pruchased within 24 hours and that triggered the system. I pointed out that I was travelling and they said this was part of their antifraud detection, and when I was travelling I should call and inform them of the fact. In the future I will not use Amex more than one time every 24 hours for gas purchases.