German Denis' spotkick seemed to be awarded for an Andrea Ranocchia push, but it later emerged was for a Walter Samuel handling offence.
Zanetti blasted: "Iâ€™ve been through many negative situations like the one from this evening, but lately they always happen to us. Iâ€™m talking about the non-existent penalty that Atalanta received, which is really shameful. He told us he saw a handball from Samuel, and we told him heâ€™d see from the replay that it was never there. There was a penalty on Ranocchia? The replays speak for themselves. I wonâ€™t say anymore because I donâ€™t want us to risk punishment for these things as well."