not able to get replacement and not really happy with it!!

hi there

I bought my new aluminum macbook through apple online store on 2nd of April and it got delivered on 6th of April.
then i noticed that the lid doesn't sit even when it is closed, so i took it in to get fixed at the apple store on 14th of may.

however, it is not really fixed and i have since found out that the closing mechanism doesn't work properly as opens itself when i lift it vertically

so i talked with one of the genius on same day and he and his colleagues told me it is a manufacturing default.
they said my new laptop's hinge is too loose and they told me i can get replacement as it is manufacturing fault and also its less than 2 months old. they gave me a case reference number to claim problem to apple online store.

i called and talked to one of customer service representative.
i told her everything and then she told me they can not do replacement although the goods are faulty.

Because it is not hardware problem, they can only repair it.

well... to get repair still sounds ok
but i'm not really happy to know that i bought a faulty laptop.
because i expected good working hardware and also good quality product from apple.

and now im just wondering does anyone else have this kind of experience?
and also want to know if i'm overreacting? just happy with i bought dull lap top but can get fixed.