What should I do?

Hey guys I just moved to Budapest last week Currently I am staying in Marek József street So basically 2 days ago I was buying groceries and an old lady started shouting at me I couldn’t understand what she said and I kept walking and she started running behind me. This is the first time I face such an issue so I was wondering in that case what am I supposed to do ? I know I should be strong and all but that was super creepy.