Well, okay...here's MY take on this. I always give a person the benefit of the doubt. Maybe there was a very expensive dress stolen on this girl's shift and she's being extra cautious. Maybe it's her first day and she came off as being rude. If it were me and I wasn't AWARE of how I was being perceived, I'd want to know about it so I could correct the issue.

If none of the above applies (which is doesn't look like it does)...

What Mayor Karen said! Is this place a chain or is it privately owned? If it's privately owned, I'd find out when the owners will be in and speak with them. If possible, bring in everyone that was with you that day.

No one deserves to be treated that way.