sometimes it takes 10 weeks instead of the stated 6-8. The confirmation papers that show the 10,000 miles and 15,000 miles each have a code on them. the sole purpose of this code is to track you bonus miles. you can take that paper (given to you when you signed up) and go to the branch and they can go in the system and see if the mile request has been approved, submitted, pending, ect.
you can get the info even without the confirmation codes, but if your like me and have had multiple awards, the number comes in handy to help identify which award is missing.