Went in this morning explained that the dust under my screen wasnt there before I had my battery replaced. He acknowledged the fact that it was an issue and took it to the back. Finally comes back and tells me they're replacing the screen and it would be about 30 minutes. I said great, thanked him and waited patiently. 45 minutes later returns with a mint screen no dust not a scratch. I thanked him again and as i'm walking out of the store I click the home button to check the time and it doesn't work. Sleep/wake button worked and not the home button. Tried it repeatedly before i walked back in there and still didnt work. So then I got frustrated went back inside gave them my phone back and the guy tells me they'll "look at it" again. So after 15 minutes i explain to this guy that i can't wait another 30 minutes for them to dissect my phone and find the mistake they made when putting it back together and the fact that this was the third time in a week that they had to tamper with it was irritating.
Kept my cool until he told me "IT HAPPENS."
so i asked if it was possible for dust to get under the screen and he responds with "WELL OFCOURSE. dust gets into screens all the time people buy a phone and return it 4 days later for dust" (go argue with the geniuses alphadog)
at this point i got frustrated that i was still sitting there waiting for them to figure out where they wrong and i made that clear. the dude that told me "it happens" walked away from me to help another customer and said they're working as quickly as they can. Finally the chick who checked me in approaches me and said "i'm handling the paperwork to replace your phone it will only be a few minutes sorry about this".
moral of the story there was in fact DUST under my screen after a battery replacement regardless of what some negative nancys have to say
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and although the end result is good, ive never seen any employee at an apple store be so careless and ignorant when dealing with a customer. The fact that "hey let me hit the home button and make sure everything is working properly before giving it back" didn't cross their minds is just careless