This went from my worst Apple experience to my best.
Went to the store, spoke with the manager that I had arranged the swap with. Tech came over to do the swap.
Swapped my Mid-2013 13" MBA with the 1.8, 4GB RAM, & 128 GB SSD with a brand new MBA (Sealed in box) with the 2.2, 8GB RAM, and a 512 GB SSD. I am beyond happy with this resolution.
Best part is I get to add Apple Care to this new one and have coverage until 2018 where as the coverage on my damaged model was expiring in 2016.
It is a real shame that you have this experience at all, but I am glad they're not hiding behind corporate fine print and did the right thing and made sure a customer with a bad experience becomes a return customer leaving with a matching product in good state and quality. It is a huge plus that your specs got bumped, and lets hope this device doesn't give you any trouble; though you do have apple care now.
To compare this.. yesterday I was at the tmobile store, because I had a question about the iPhone6sPlus order, and I just happen to walk by one.. We got to talk about my iPhone 5s and I mentioned in a few weeks my 24 months are up, which is perfect timing because my battery on the 5s is showing it's near end of life. The guy mentioned that I probably have to pay Apple to repair it, but that since I am not beyond my 24 months with tmobile that they swap it free of charge. I told him I will go home, back up with iTunes, turn off find-phone, pull the sim and come back today.
Today the guy isn't working, and the woman in the store says right away 'you have no warranty', she wasn't interested in offering anything for free. Her excuse was 'I am a Samsung person, not really an iPhone girl'. I thought it was best to not even comment on that, took a breather and said "Check with your colleague, because I was told it's covered, we had a lengthy conversation about it. Could you otherwise explain why your colleague was ly.. i mean misinforming me?'
She came back after talking to others in the store and tried to convince me warranty is 6 months, .. 30 days, 90 days!, 1 year.. "maybe" 24 months. I took the repair form they were filling in and the fine print mentioned 24 months, pointed it out and said "If I leave the phone here, while I was told it would be a free repair, and it says here it's iwthin warranty of 24 months, I expect no bill, please tell me now". She said it looks like it was free, and they took the phone.
That experience, where the people working there have no clue what they're selling, do not want to give customer support beyond 'sales', and just tell you what you want to hear .. vs walking into apple, getting someone assigned to you personally and listening to your story and are even willing to swap out a device to resolve a problem. What a difference. It really makes me want to just pay the 150 bucks to Apple to feel 'good' about getting a battery fixed, and it makes me regret even talking to tmobile to try and get it fixed under warranty (which they offered and explained I have when I wasn't even asking about it).
So yeah, i am glad that when you spotted a problem, that Apple reviewed it and swapped the device. 'That', is customer service.