Seriously? Netflix has like...A MILLION ways to access the account. You have NO ground to stand on. It isn't THEIR fault you refused to go anywhere/do anything to help yourself.
And you know what? You could still watch Netflix through the Playstation, WITHOUT signing in.
How do I know?
I did it. Every day. EVERY day that PSN was down, I accessed Netflix on the Playstation 3.
So suck it up. You just didn't have the dedication to keep trying to access it. There's no one to blame but yourself, and they honestly owe you nothing.