As an upper income professional providing services to some very rich people, I can say that some of them view me and communicate with me as as if I am on a ‘lower level’, since I work for my living. Others view me and communicate with me as a ‘needed expert’, since I provide an essential service that makes them richer. Everything from body language, business manners, style of speech is different between those two groups. I suspect that these patterns vary on an individual basis at all levels of the social spectrum. My experience is that I am as often ‘dissed’ from below as from above. When dissed from below, the form is usually contemptuous or hostile body language by a clerk. When from above, the form is usually displays of temper or failing to pay my bill per our contract.