Not only airline staff, who for the most part I find courteous and pleasant; often under difficult circumstances.
But a certain car rental company at Stansted could do with improving their customer awareness staff training, it would not 'hurts'. After arriving to return a car, we stood waiting at the counter with several others. Finally, after approx 35 mins we got to the front and waited whilst the woman continued to tap at her computer and consult the paper at the side.
After a few minutes, she stood up and turned to the girl next to her, who we assume she was training (I hope not); and spoke to her. She then came back to her computer and finished her 'work'. Then she deigned to look our way. 'How can I help you'
I wanted to reply, 'By treating us with a little less rudeness would help', but was restrained.
I am aware she was busy, but by deliberately ignoring us, she showed a distain for customers which verged on the offensive. A simple 'I'm sorry, would you mind if I just finished this'. Smile optional.
She appeared to be saying, I don't like my job and you are part of that issue, so you get the flak.
Well, they just lost my custom, so......