Well, in the spirit of everyone keeping everyone updated, here's my update.
After having my order mysteriously canceled on Friday (but having my two wireless charging plates ship), I called AT&T, and this time, I got someone who was for more competent than people I had spoken with previously. Apparently this "mismatched phone number" issue, which a lot of people have been getting, including myself, is actually just how the system alerts them to the fact that a SIM card hasn't been added to the order. I believe the system is supposed to automatically add one. In any case, if a SIM card isn't added, rather than the order getting rejected upon entry, the order rejects when it's ship time. That's what happened to me. The guy I spoke to was able to put a "warehouse order" in for me, which is different than a normal order on the website, to get one shipped for me as soon as there's inventory. He also told me that of there three warehouses, one of them was showing a decent amount of stock. The other two, he said, weren't showing any. So he gave me my warehouse ship number. I see today (sunday) that there has been a $450+ authorization on my credit card from AT&T so I hope that means my phone is going to ship out to me tomorrow. If so, I should get it on Tuesday. If I get it, I'll post a pic here. Anyhow, the saga continues...