E-tickets are supposed to be convenient, but for this confused customer, it was the complete opposite. Buying tickets for an event used to be a lot simpler than it is these days. I'm told that decades ago, if you wanted to get a ticket to a concert, you had to physically walk your body over to a box office and buy a ticket from another human being. Sometimes people would camp outdoors while waiting for tickets, and there were certainly people who bought tickets just to resell them. But for the…