I used ticket machine number 115 at Milan station on 28 January 08:48 am to buy three tickets to Venice. The machine hanged after I inserted cash. I couldn't get my cash back, and there is no tickets generated. I have to pay again to buy new tickets in the office. The ticket officer Alessandra was rude and she was very busy chatting with others, didn't care about customer's problem. She just let all the customers wait when she was chatting. Unbelievable service I have ever seen.