My wish was just granted! Whoo Hooo!!

But...

it was offered to me twice by the same person ( I clicked PM to verify the sender).

I accepted one.  What do I do with the other offer?  If I decline or let time run out will it cancel the first one I accepted also?

It is the same title, same ISBN, same cover type.

System glitch?

Find out first if the sender is also showing the transaction twice.  Verify that he/she is going to send the book, and then cancel the extra.

Contact the poster. It's probably a system glitch, as a person can't normally post two of the same book. You can agree to accept the second one if the poster will cancel. That will remove the duplicate from the system without bothering anyone else.

The other option is to have the poster PM the owners via the "contact us" link and ask that the second posting be removed. This option won't tie up one of your credits.

From the Help Center ...

• You can simply delete the extra copy from your bookshelf

• If the book is on a WIsh List and involved in a pending offer:
  • Wait for the book to be requested. 
  • Accept the first request
  • Decline any extra requests by clicking
  • Doing this will remove the extra copies from your account. 
  • You will have a chance to explain what happened to the requestor when you decline a request. 

Thanks!

Merry Christmas!