I can understand not wanting to visit a store with crummy employees that are not helpful. I find that odd, when I walk into mine, I can just be browsing and for the 15-20 minutes I maybe in there, I'll get asked a few times whether I need assistance if I encounter an employee..
Sometimes I find something I want, or sometimes I am looking for something specific, either way, most of the employees in mine are helpful. Course not all stores can be created equal. Also, depending on when the last time you visited, most of these places seem to have routine turnover, so perhaps the people you found annoying the last time are gone...