The Italian's comments come following the Nerazzurri's controversial 4-3 defeat to Atalanta at home in Serie A on Sunday.
"I haven't changed my mind, no matter whether I am angry or not," he told reporters on Monday. "I don't think I have to explain things any clearer, you just have to look at how this championship is evolving, especially in terms of us.
"When there is a desire to hit you then you get hit. When there are doubts over a Tommaso Rocchi penalty, then it is not given.
"When there are doubts about a non-penalty then it is awarded against us. We haven't been given a penalty for 21 games."
Inter are currently fifth in Serie A with 50 points from 31 matches.