I can understand your concern for your new new chicks and the confusion surrounding them being sent a day early. I can also understand frustration and anger when someone is rude to you. That said, it is a very busy time of year for the postal system with many packages and many, many pieces of mail coming through their offices. To look for one package, even if it makes noise may truly be a monumental task to undertake for a customer who is on the phone and not even there in person (in a long line of persons, I'm sure). IMO, I would take a deep breath, think about it from their perspective and go there in person with a plate of cookies and a "Happy Holidays" to you on my lips to pick up your new chicks. Most of the time, "nice" is catching.
P.S. My grandmother was the Postmaster of a small Post Office and was a wonderful, customer service oriented person so not all postal workers deserve a bad name/rap.
P.S. My grandmother was the Postmaster of a small Post Office and was a wonderful, customer service oriented person so not all postal workers deserve a bad name/rap.