Dear Amelia,
I got the same offer from Into English in Milan, and i have signed the contract. I had the same experience with Skype interview, no audio from school end. I typed everything and i got selected, everything is too good to be true and that is why i am also paranoid. I also tried to search information but there is only one that is their website. All the email i received was from info.intoenglish@gmail.com, whereas the website contact id is info@intoenglish.it.

They have also advised me to contact an attorney for visa and work permit.

I don't know what to do, once they will ask for money it will be clear that it is a scam.