Nokia Care would probably be the best place to get it repaired.
I went to the nearest Microsoft store and they said there was nothing they could do.
Using a 520 as an interim. It's a POS compared to the 820.Throw it in the trash, too expensive to fix, buy a 520 for $60....Buy Nokia Lumia 520 for AT&T (Black) - Microsoft Store
After spending over an hour on hold between AT&T, some useless outfit called Repairzilla, and then Nokia, I've been told I have to go to some outfit called Palco Cell Phone Repair and spend over $130 to get it fixed.Nokia Care try to search if there's an available nokia care in your area I think it will cost you more than $40-$60.