Do you mean the reply from Amazon? That usually will come in under an hour. I'm finding that some people who said they reviewed my book (and I believe them), the review never showed up. It happened most often in households where two people reviewed the book. For example, both Bea and Mike (the owners) sent me an email telling me they reviewed my book, but only Mike's showed up. This happened about 5 times overall.
Come to find out, if you have never bought anything from Amazon, you can't leave a review. I deduced that in most households where I had problems probably the household just used one person's account. So I'm guessing the account is in Mike's name and when Bea orders something she uses Mike's account rather than set up a whole new account for her. My husband and I only have separate accounts because we have bought gifts for each other and wanted it to be a surprise.
So all that is to tell you make sure you have purchased something from Amazon and if you have an account in another family member's name that may be why it is not showing up. I hope that makes sense and helps.
One way to fix it, would be to buy the free testimony book and have it sent to your computer or Kindle (You don't have to have a kindle to read a book, you can get a free app and read it on your desktop, laptop, tablet, or even iPod (and iPad to of course) I just noticed that particular book is no longer free on Amazon, but there are lots of free Kindle books and you could set up an account without buying anything. Of course, I'd encourage you to buy the paperback version of the testimony book because it id full of wonderful testimonies and could be read over and over.