Books delivered in different days

I purchased 8 copies of a book I wrote for a training course I organized. It’s not the first time I do this, but this time something fun happens.

Seven have been delivered (“entregado”), one is delayed (“demorado”).

In a tweeted I sent I added “#Amazon” as hashtag asking: “I would love to understand the mechanisms and decision making process that provoked this.”

What happens is that an automated reply arrived:

I did it too in LinkedIn, no automatic answer there.