I know what you mean!  Hubby and I went to lowe's the other day looking at prices for wood to build a photo shelf cabinet thing.  Three employees were walking down one of the Main isles, you know the HUGE Isles that like 6 or more people could stand shoulder to shoulder.  They didn't move and expected US to move so they could keep walking and chatting.  One out of the three greeted us with a "how are you" but kept moving.  No, excuse us, or can I help you find something.   That pi$$ed me off.