It sounds as if there was a fundamental miscommunication, but your story keeps changing. It may be that the points have not yet posted because it is too soon, Please tell us:
1. What is the exact name of the American Express card that you used to make these purchases?
2. On which date(s) did you make the purchases?
3. On which date did your most recent statement close?
4. What is the name of the "international" airline?
5. What "points" are you expecting to post: base (1 point per $1) or some type of bonus points, or ...?