^^^ I worked at a major retailer last year. We had this one customer who decided I was his personal shopper or something -- he kept asking me questions (which is fine) and then ordering me to put the stuff he wanted in his cart (that's not how it works, buddy). After the first item, he answered a phone call ("I have to take this") and stayed on the phone for the rest of the visit. (Didn't stop him from insisting I help him with everything, though.) When we got to the register, he totally ignored the poor cashier and she and I had to resort to yelling at him to tell him his card had been declined -- he'd turned his back to her as he carried on his phone conversation. Incredibly rude and entitled.