Lots of excellent advice here.
I can totally relate to your story Barbara Diane because I too had a negative experience with a Nordstrom Shopper a couple of years ago (not during NAS).
To be fair, I gave her very little idea of what I was looking for because I didn't really know, but she also didn't ask me any questions. She brought me a bunch of stuff that fit reasonably well in styles that she liked. The worst part was when she said I was going to have to wait for an hour to get my stuff rung up, and asked me to go have lunch while I waited.
I was shell shocked like you were and took a whole lot of it back. I ended up with a few good things and a couple more that I didn't really like that much. And I ended up redoing some alterations because they were not quite right.
I'm glad I did it overall, it was quite an experience! I think I learned a lot (sort of the hard way) about being picky about what you want.
If I wanted to go this route again I agree with the advice here that if you want an SA to work with you the relationship needs to be built over time and not just at NAS. And of course like any other profession, some of the shopper/stylist people are really good at what they do and others are not.
And ...what Angie said...!!!