Thats what happened to mine, though not that bad.
Eventually, because of the "quality" of the repair by Flextronics, they ended up replacing the entire case.
Just call Apple. If they try to refuse (and you live in the US) be sure to bring up that you feel them not fixing it is a violation of the Magnuson-Moss Warranty Act of 1975. If you live in California, bring that and California Civil Code 1750 up. You'll get it fixed 😉