My Basic Bing Experiences as follows:
Have you signed up with Bing's webmaster tools?
Have you verified ownership and submitted a sitemap to Bing?
Has the sitemap been scanned and are the number of pages in it being reported?
Till you do the above, it's kind of pointless waiting for anything to happen and after you do it, its pointless expecting anything until the site's been scanned for about six months.
Bing has always been pretty lax about indexing our website. For every three pages Google reports, you may have only one in Bing. After a year, they seem to ramp up and then average indexing about 80% of the pages on your site. Finally after two years, we've hit 98%.
Don't use the Crawl-delay in your robots.txt to slow down Bing's scan rate, manage bot throttling through their tool in the webmaster tools and commesurate for any throttling you do during your customer's primetime use, give more access during the off hours. The Bing of today might be different from the Live Search it used to be known as, but back then, throttling through robots.txt crawl-delay caused our indexed page count to drop off.
As a contrast, Google had our website redesign completely reindexed in a month and hit 99% pagecount indexed at two months.