Here's the apology, official. But why is PWC still the accounting firm of record. Award Season''s 2017 wrong *wow finish* (Humphrey Bogart uses the wow finish line to Bergman in Casablanca.)...
STATEMENT FROM PRICEWATERHOUSECOOPERS
We sincerely apologize to "Moonlight,""La La Land," Warren Beatty, Faye Dunaway, and Oscar viewers for the error that was made during the award announcement for Best Picture. The presenters had mistakenly been given the wrong category envelope and when discovered, was immediately corrected. We are currently investigating how this could have happened, and deeply regret that this occurred.
We appreciate the grace with which the nominees, the Academy, ABC, and Jimmy Kimmel handled the situation.
---PwC