Workers in the service industry are cheerful and friendly to each other, but not to me... e.g. in Best Buy the other day I walked up to a group of 4 workers ch

Workers in the service industry are cheerful and friendly to each other, but not to me... e.g. in Best Buy the other day I walked up to a group of 4 workers chatting together about 10 meters from the checkout counter to ask if any of them could open another till so I could purchase the microwave I was holding. They told me in an ultra-polite passive aggressive way to wait in line at the single checkout that was open. Obviously no big deal: hourly workers in their teens and 20s have always been less than stellar. Except the worsening trend has been noticeable.