I dropped my new phone and a little dent on the top right corner has rendered the phone useless. I was wondering if there was a way I could return it or replace the broken screen and have my thing back. Barely used
So it seems that your 520 may have died, it is so cheap that it would only be worth trying to change the digitizer yourself. The best shot you have is fixing it yourself, any cracked screen will render the warranty useless.