i don't know what to do, i'm in the same boat, mine started chipping a month or so after I got it, but I've called stores (went in to one) and they told me they can't do anything for cosmetic damages, as it doesn't mess with the function of the phone. Mine is chipped pretty badly too. I even asked them if I could just scratch the rest off of the phone so it would all be one color atleast and the guy told me it wouldn't be a good idea...
here's some pics of mine I just to