answer:I have taken on these sorts in the workplace as a personal challenge: not only to be unfailingly kind to them but to go out of my way to be courteous, helpful, and even warm to them. I have actually made friends of them. I think treating them sweetly and with sincere caring is really the only solution. They must be very unhappy to act that way. For sure, the opposite will never work, and neither will attempts to force them to behave better. Leave that to their supervisors. Even if they don’t end up loving you, hugging you, and giving you presents, or crying when you leave, you won’t be the worse for repaying rude, boorish behavior with sweet gentleness.