I just saw a guy who posted a deal as he paid for an Ipad Air Wifi and got a cellular version. It reminds me of the story which I have experienced myself.
Early last year, I walked into JB in World Square to buy an Ipad 4 Wifi 64GB for i think around $698.
The sale person gave me the docket and I went to the counter to pay. Once I paid, I collected the Ipad 4 and made sure it was the 64GB version.
As I walked out of the store, I checked my invoice and noticed the sale person has actually put it through as a 16GB version which is around $548.
I decided to walk back to the counter and told them about the mistake, they of course made me pay the $150 difference.
As I walked out of the store again, the same sale guy told me "You could have just walked off".
"I should have" - I replied.
4 of my friends who were there laughed at me and said I should have just walked off and I said karma would find me one day.
I then went overseas in the next week and went up to TRS. They looked at the invoice and decided that they would only refund me the $548 as the extra $150 was charge as some random item which i couldn't present. It turned out JB staff should have reverted the 16GB version sale and initiate a new 64GB version, instead they just put that $150 through on some random item which I couldn't remember.
Until this day, I'm still wondering if I should have walked back in.
Does the receipt still say the 16gb version?
Hopefully you won't have any warranty issues since your receipt won't match your product.