"I'm so sorry...not sure how we missed your order. It will ship today and you will
receive tracking information once it ships."
So, yay, it's now on its way (I got the Quantum View notice separately), but if I hadn't been asked, I'm not sure when it would have occurred to me that there was a problem.
And that is one _hell_ of a non-explanation. "not sure how we missed your order"? It's a very small operation, but yikes. That's not much of a business process. (But there is an apology, which is to the good, and a prompt correction of the problem, which is even better.)
It's also interesting to me how much that stands out against the background of Amazon (Zappos, etc.) order experience, including 3rd party sellers, and eBay (I'm picky about my sellers over there, too). I've gotten so used to a flawless order/ship/delivery experience (4 business days is a long wait, in my experience, never mind an entire calendar week) that I don't have any process to notice when something got dropped.
ETA: I forgot one other odd experience, altho that one was so well handled that the seller pre-emptively described what might happen, which that the item might no longer be available after it was purchased, if it sold in their brick-and-mortar store.