Cellino was angry his team had to play the match at Stadio Ennio Tardini in Parma due to safety regulations at their own ground.
"I am puzzled by their attitude," he told reporters. "I have been puzzled before the game, during the game and now after the game.
"Whenever they have asked for something, we have accepted - but this time they have refused to meet us.
"We had 48 hours to arrange a trip to Parma, which is just around the corner for them.
"Juve have won today with poor sportsmanship - the facts speak for themselves and I am disgusted.
"I thought football in this country had changed, but it seems that a leopard never changes its spots."