The Italian coach was unable to conceal his anger after key decisions went against his side on Sunday
Borja Valero put Montella’s men in front midway through the second half before Mauricio Pinilla equalised late on to rescue an unlikely point for the visitors.
The Viola saw Giuseppe Rossi’s late penalty appeal turned away by referee Emiliano Gallione before David Pizarro was sent off for his overbearing protests.
“Since I’ve been in management I have tried not to comment on refereeing decisions, but I feel the need to say something now,” the 39-year-old told Sky Italia after the full-time whistle.
“I will no longer accept the difference in judging incidents and the lack of uniformity in treatment of some players compared to others.
“The referee must not be offended, and that’s fine, but at the very least you need some form of universal treatment. These kind of incidents will always cause controversy. The penalty you could give or not give, but that wasn’t the cause for my anger.”
The Fiorentina boss struggled to hide his frustration and hinted that it was decisions such as the one made by Gallione that damage the reputation of Italy’s officials.
“The referees have pressure and tension, but I don’t think they are afraid.
“Unfortunately the football system does lose credibility. There are bound to be suspicions after certain decisions.”
A bad day for the Tuscan outfit was compounded by injuries to both Mario Gomez and Juan Cuadrado, with early reports suggesting that the Germany international could be out for over a month.