Glad we don't have self-service at our local supermarket. All supermarket nice clerks.
That way I don't have your problem. I would if they had self-service, though.

“Go to the Caja to get your receipt !”

Huh? Never found which part of Walmart is the Caja but I asked Everyone in the vicinity.

The security at the door asked to see my receipt. He must of read my expression as I kept walking and said, “it’s in the Caja!”

Ps. In Spanish means several things and any cashier could be the caja. But CAJA can the pay office or many other things. We call health insurance CAJA, too.

you have no one to blame but yourself!