when you first meet someone, respect is given by default, but you do get people who are arrogant, and expect you to lick there feet, they only deserve a modicum of respect until they cross the line, then if they have'nt earned it they dont get.
I owned a bar for a few years in spain, when I served people it was in the order they arrived, I had a couple sitting at a table, I walked to the table before theirs, they started clicking there finger and said can we have, I said one moment please, in fairness they did wait a minute.
then came the time for the bill, and an arguement ensued(Well a one sided arguement, I ain't going to argue trivial shit, but I ain't going to be talked down too, either.) regarding a class of fizzy water, 10p in english money, they started to swear and be extremely rude they had'nt even drunk to much, so I said you have'nt got to pay anything, so f**k off, and walked away, the man followed me in, he said do you know who I am, I said I could'nt give a f**k if you were the king of england, f**k off.
he than said I was'nt surposed to talk to customers like that, I said so I have to except your rudeness, well then let that be a lesson to you, where I come from, you only get respect if you earn it, and you ain't earned any, so f**k off.