Barcelona's Ousmane Dembele and Lionel Messi were on target as the Copa del Rey holders thrashed Levante 3-0 at the Nou Camp on Thursday for a 4-2 aggregate win to reach the quarter-finals. However, Barca's status in a competition they have won for the last four years is unclear after Levante said before the game that they would file a complaint to the Spanish Football Federation (RFEF) on Friday about the Catalan club.