Who called from 5135791950

Anyone know who this is? All day and all night I get calls from this number on my cell. I have no clue who this is.

Received a call on 12/19/2013 at 8:36 AM.  David Louis left a message saying he was writing an article for Forbes and wanted to interview me for it.  Caller ID showed, "EMI Network."

Sounds like a scam to me. Every time I get these calls where they want to "interview" or "feature" me and/or my company - they usually want BIG money...