yoyo – if this is really true and you’re really scared, then have someone come along with you the next few times- ex: a friend or sibling. have them keep a distance so the guys in the store and this girl who is apparently following you don’t know they are with you. In other words, it should still appear as though you are alone. Your companion should keep an eye on what’s going on and see if he/she thinks you are right about what’s going on. If so, then take the next step and report what’s going on. It might also be helpful for your companion to discreetly take pics or video of the whole thing.
Hatzlacha to you.