I'm wondering about whether to accept the help of a local who wants to help me:
Buy a bus ticket: no help needed. They are sold at Tobacconist's shops displaying the city transit logo.
Buy a train ticket: no help needed. Automatic kiosks have multi language prompts, and English is one of the options. If you buy at the ticket window, the agent will help you since you don't need to do anything.j
Find the right platform: The 'binario' (track) number is displayed on signs overhead. If you can read numbers, you can find your platform. Confirm the track number on the departures electronic table as sometimes track changes occur (like gate changes occur at airports).
If you arrive at Milano Linate, take a taxi to the Milan Centrale station. There is no train at Linate. It's a short 5 mile taxi ride.
Always be suspicious of those who offer unsolicited help, especially if it involves handing your valuables (like cameras or money) to them.
If they follow you in a threatening way turn around and say in a loud voice the sentence in the paragraph below.
If the importuning individual(s) is a gypsy kid, then being very firm may not be enough, therefore you need to adopt the Italian reaction, which usually involves seriously threatening to cause bodily injury. That is the only thing that works with them and if there are some young Italians nearby they will intervene and actually hit those kids and scare them away for you, often just for the fun of it. Italians hate gypsies.
is there a phrase in Italian that one can use to tell them "to scram," or "go away."
Levati dalle palle, stronzo, o ti faccio un culo cosi'!
While you say so, it's important that you make a specific gesture with your hands. With your hands closed in a fist in front of you, pull out your thumb and index finger from both hands as if you want to show the size of a large soccer ball. Refer to the video clip below and closely observe what Tony Soprano does to the FBI agent.
https://www.youtube.com/watch?v=F0WK3D7ZNSQ
Since I look a lot like Tony Soprano (including in size), it really works for me.
I defer to Google Translate to define the meaning in English o the above phrase.
Laissez-moi tranquille would be very comprehensible to Italians, but since gypsies barely speak Italian (they come mostly from the Balkans), it wouldn't help.