You've indicated that you've used Bing's tools to see if your website has been indexed but are silent as to whether you've actually manually submitted your site to be indexed by Bing using their url submission tool [0]. If you do submit the URL and then, after a decent interval, your site still doesn't show up then there might be something to your claim.
[0] https://www.bing.com/webmasters/help/url-submission-62f2860b