I am writing a review based on my (second) experince with my site-to-store purchase.
Both times I went to the rear of the store where you pick up and hit the little "call" button. As I write now, 15mins have gone by with nobody at attendance. Or maybe I am just going delerious and it has really been 30 mins and I'm just good at entertaining myself on yelp.
Bottom line is - they aren't quick at this desk so don't come expecting a quick jaunt.
UPDATE - I went to the electronics department counter and they helped me out.