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Request package pick up. Leave it where ever they will find it or ask them to knock on door for personal handover. That is one of their menu options. They then e-mail confirmation it was picked up.

Final follow up. Borderlands did resend book - in same crummy envelope. But it was wrapped in a plastic bag like you'd put your veggies in! Progress I suppose. Anyway, it got here safe and sound.
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And out of the clear blue this in the e-mail:
"we are sending you a replacement

please us back the damaged book and we will replace it for you. What email address can we use to paypal you the...

Their response:

"we package literally many thousands of little books in that mailer with excellent results. Maybe on out of every thousand suffers any ill effects. If that mailer was causing any...

And as long as I'm griping about everything - Borderlands. They put those little books in those cheap envelopes with not even a bubble wrap bag. So mine got some minor water damage from all the...