McDonald's

I went thru the drive thru and ordered a Southwest Salad with no chicken because I don't eat meat. Half way thru my salad, noticed it had bacon in it. At first I thought it was a tortilla chip, but after I dug around I notice several pieces of bacon, and not small pieces. I looked up the ingredient just to be sure and sure enough, the Southwest Salad does not contain bacon, not sure why it was added to my order.