I was at famous footlocker shopping for shoes, I kinda stood around waiting for texts from my mom about the shoes. The lady comes up and asks if I need help, which is fine, I let her know that I'm alright and say thanks. Then she walks around me, just 5 feet away and stares at me. I just keep my head down at my phone waiting for those texts. She moves to my other side and just stands there for a while. I eventually move and she moves with me. I try to ignore it but shes never more than 10 ft away from me in this massive store with plenty of other customers. I try on shoes and decide to buy them so I move up to the front of the store and she follows me. My social anxiety was triggered and I started shaking.  FML. My mom asks me to wait before purchasing the shoes because she might have a coupon. Time is moving so fucking slow and I look up just to make I contact with that sales associate. I say hi and she turns around and goes around the aisle to stand behind me. I put the shoes away and told her that her patrolling and staring had triggered my social anxiety and that I needed to leave without making my purchase. She understandably didnt know how to respond and just stared some more. I left and am now shaking in the bathroom. Maybe she thought I was shoplifting shoes in my skin tight yoga outfit. Maybe she thought I would tell the register that she had helped me make my purchase. Was I out of line for saying anything? My anxiety is my problem and not her responsibility right?