Yoyo, you might be blowing this out of proportion. Your parents would not be as nervous as you are because some other young woman is following you. At best they will advise you to confront her, at worst one of them will go with you and confront her.
As far as feeling this has to do with the managers in the store, at best they will tell you not to go there anymore, at worst they will go to the store and speak to them. Your whole nightmare will be over and you won’t have to suffer anymore.
There is no reason for you to have so much anxiety because of this one store and these guys who are overly friendly. If you can’t handle the situation on your own, you have to learn how to ask for help, and your parents are the best people to help you.
YoYo, you are going to find that many times in your life there are going to be situations in which, although you are an adult, you will still need help. You will have to learn that it is not a sign of weakness or immaturity to ask for help when needed. It is a sign of courage and understanding that one cannot always handle life’s burdens or life’s issues on their own, and that Hashem sends shelichim if you ask for them.
If you are smart enough to come here and ask us for advice and we keep telling you to go to your parents for help, then why are you NOT smart enough to take the advice we give you??