Yesterday I had to mark a book RWAP and ask for my credit back. How long is a good amount of time to wait for the person to respond? If they don't respond by then, what should I do?

Tiffanie, 

You should give them a week to respond, if they don't respond in that time, then send follow-up info per the instructions below.  Per the Help Center (There is a Problem With a Book I Received):

If a book you requested using credit(s) arrives with an "official" problem, you need to

• send a Personal Message to the sender either during the process of marking the book received and/or using the PM button on the transaction in your Transaction Archive, as described in How do I contact another member?.

Your PM should be polite but clear.  It should clearly ask for a response, and if you want a credit refund, this information should also be included in the PM.

You should give the sender a week to respond.

We suggest this text: "Thanks for sending the book.  Unfortunately there is a problem [explain the problem here--if this was an unpostable book you can say that the problem "makes this unpostable by site guidelines, and I won't be able to swap the book again"].  I would like a credit refund, which can be accomplished by clicking Give Refund in your transaction archive on the Request Details page for this swap, and I will be happy to mail the book back to you if you will provide postage."

• If the sender does not respond to your PM within a week, submit this information in follow-up from the transaction archive.  This will send an email to the sender, prompting him or her to log in and deal with this problem swap.
  

• If the problem is resolved by the sender, submit that information in follow-up from your transaction archive.

• If the problem is NOT resolved by the sender (and negotiations are finished), submit that information in follow-up from your transaction archive

Hope this helps and you get it resolved soon  : )

eta - dru beat me to it  :  )

Thanks. I will do just that. If I don't hear anything by Monday I will take action, thanks!

You may not get your credit back... It's up to the member to refund your credit...if they don't you are out of luck.  :(

The last RWP  I had posted a ARC and after 2 PM's finally responded in a negative manner and  said she didn't have any credits.

When I pointed out she could buy credits....no response....