From having the unfortunate working experience of Taco Bell, I can tell you why orders are never correct. EVERY female there, has a kid. They also all have piece of shit "baby daddy's" that they talk about all day, every day. Because of their stellar potential, they lack the ability to remain focused enough not to **** up a job a monkey could do.
I always worked registers, and would watch as the *** clowns would look at the screen, then add something that was clearly not supposed to be there.
My apologies.