When I went there, I had my Macbook in hand, as well as my broken power cord, and even showed both of them when talking to the Geek Squad. I asked for a Macbook power cord. The Geek Squad employee told me a new one was ordered and would arrive in 3-5 business days.
Five business days went by, and on my front step arrived....a power cord for a Dell computer.
I went back that night; it seemed the order'd gotten screwed up because the Geek Squad had looked up my computer by putting in my phone number, I believe? (Since I live with my parents and use the same phone number, and they own a Dell computer that they bought through the same store). The Geek Squad put in a new order for a Mac charger and said it would arrive in 3-5 business days.
Yesterday was business day #5. I let it slide because maybe the order was delayed for reasons outside Best Buy's control. When today's mail came and I got nothing, I called the store to find out what was going on.
Apparently, in order to get a new power cord for a Mac, I need to verify my purchase with an Apple center first, something which NO ONE had mentioned during this entire process. The guy explained that pretty much all I needed to do was go to an Apple store and bring my receipt and my laptop with me. Or! I could get him to verify it and he would put in an order and it would be delivered overnight and this was pretty much the point where I thanked him for his time and hung up.
So, apparently, if I'd never called to find out what was going on, I was due to get a new power cord sometime around never, which the lovely folks at Best Buy never ever mentioned at any point. And it took me two weeks when I pretty much could have gotten it in a ten minute trip.
Moral of the story: fuck Best Buy.