You should "normally" get it within a week because the travel agreement must be signed and returned within 14 days of booking the trip. However, things are a little slow because of the large amount of bookings made on August 1 (I just got all my faxed confirmations on Friday, one week later, because there was such a backlog) and I think the paperwork was also a bit late going out. In this case, the 14 days will likely be from the time the packets went out, not the actual booking date.
It won't hurt to call, but I wouldn't worry. I think the interest at 9am on August 1st surprised even them. And it was probably mostly us DIS-folk
Dotti