Scared by the people at fitz square this morning

So I was walking to the interchange and there were 3 people smoking on the way. I did not make eye contact, just stayed low and tried walking past without giving too much notice. One of em came to me and asked, “excuse me do you have any f***g change or summat?” I said no sorry and continued walking he then screamed so loud I got startled. Bear in mind even though it was bright outside there’s literally no one else around so I don’t know what I would’ve done if they did anything further. Just had to walk quickly away. And this is more scary for me as I’m from another country and I’m always worried if it will turn into a discriminatory attack. (Obviously not all Sheffield-ers, just some addicts who roam the streets in town centre.)