Please I Need Hel Regarding My BLog

Please BHW'ers, am having serious issue with my money site, google is indexing the sitemap in this format:

http://www.mywebsiteurl.com/ 2013-07-07T22:04:36+00:00 daily ..

And my posts don't get indexed or my website ranked anymore, please how can i solve this??

Please your help is highly required!.
Thanks alot.

Are you using webmaster tools? If not, attach it to see if there are any issues, that's where I would start personally.