No, they've been fined precisely because they DIDN'T comply with (Italian) law.
Proven in what court of law? Every thing published about this whole affair has read that they were brought up on possible charges with zero proof that they ever refused service, as the seller, of an applicable and proven defect. But agreed to pay the finds 'no contest' because it was quicker and cheaper than dealing with the lawsuits. Including finally just saying to hell with Italy and pulling Apple Care out of stores and not talking about it anymore. Anyone gripes and Apple will send them to the government as they should.