OK, I guess this is a fresh number for some telemarketer. I've submitted a complaint against 323-375-5847 on the Federal Do Not Call Registry. It's easy:
https://complaints.donotcall.gov/complaint/complaintcheck.aspx
The more complaints filed, the larger the fine will be when FTC tracks down this telemarketer. I've added a suggestion to the Fed site suggesting offering perhaps 50% of the fine to whomever locates the actual telemarketer whose using this #. That could almost become a career in itself... and quite lucrative if fines (and bounty) were sufficient, no?! :-)