Who called from 6183551946

"Zack" Introducing me to "the most revolutionary business model on the market today."  Another one to block.

Got a call from this number on my cell this morning (April 23, 2015) but didn't answer.
I never answer calls from numbers not connected with people I know.!

Called my cell at 1:38 pm CDT on 4/13/17.  Did not answer, no message left.  Caller ID said Nevada, but number is from Saint Lawrence, Newfoundland and Labrador, Canada.  Smells rotten!