iBook won't download

My iBook is working fine, except 1 book I paid for and tried to download. It shows the book on my stand with the bar saying it will download and nothing happens. I have reloaded ibooks reset my I phone 4 s and still nothing. I even went to my email receipt and clicked the problem link and it won't open ibooks, hoedown I get a refund or at least get the freeking book downloaded.

Ps. When I search for the book in ibooks it shows as it is downloading.... Not downloaded and I cant even see the book on my list.