It can be annoying when you go to pay for something at a store and you step into a checkout line only to learn it is for credit cards only. But you probably don’t want to do what a customer did recently at a Family Dollar on Mercer University Drive in Macon when she found herself trying to pay with cash at a card-only register. “The female,” a Bibb County sheriff’s report noted, “became angry and called the cashier a b----.” A manager intervened and told the customer that her behavior was “uncalled for,” the report of the Oct. 29 episode added. The customer then told the manager the customer is always right. “Not when you call the cashier names like that,” the manager replied. The woman, still cussing, marched out and drove off in a silver Lincoln.