We had the same problem for Testlabbet.nu. We tried submitting our pages and URL's, sitemaps and using other tools in Bing Webmaster but still got no index, Then we did use Bings Indexmenow and finally it works! Im not sure why Bing make it so hard to index but hopefully will be better in the future.
![PatrikE44 PatrikE44](https://moz.com/avatar/large/3/p.png)