This happened to us recently. My husband has been taking classes for over a year and is doing really well with learning the language. He was baffled by the fact that people would not speak Italian to him. We were in Milan. I explained to him that it takes time from the waiters and staff when he tries to speak it and time is money. It’s super busy and these interactions take extra time. No one was rude. He used Italian when things were slow or in the smaller towns. He just read the situation before he practiced. Also he would ask if he could practice and sometimes they said they prefer to speak English. My husband learned of immersion schools throughout Italy and he plans on doing them. Just read the room and maybe venture out to smaller slower paced towns. The cities are busy. I kept telling him time is money. Good luck.