Because I said so

So why must people lack so severely in quality customer service? This is my first time working in retail and even I know that it is good customer service to ask if one is ringing debit or credit when swiping their card. If they would prefer the receipt with them or in the bag. If they found everything ok or needed a price check on anything before we got started. I mean these are just simple gestures that can in turn make a person believe that you have good customer service even if you do not. Why oh why do the cashier's at my place of employment eat candy in front of the customers, curse to other cashiers about customers "Girl I got to get the hell outta here because these people have been getting on my nerves," I mean really!? In front of the person who is spending their hard earned money making sure you have a job. Do workers not know that if there were no customers in the store, if there was no business there would be no cashiers because there would be no cash. I mean