Did not answer.  No message left. Blocked.

January 30, 2017, 2:23 PM.  Call from 760-767-8016.  Caller ID said, "UNITED RENTALS."  I picked this one up because my gardener had rented some equipment for me recently and I wanted to make sure there hadn't been a problem.  No one responded to my, "Hello,"
The 767- telephone exchange is in the Borrego Springs, CA area.

Further research:  Whitepages.com returns 10 pages of responses for United Rentals in Borrego Springs, CA.  NONE of them are within 30 miles of the place, some as far as 450 miles away.  In other words, there Is No listing for United Rentals in Borrego Springs.  This is spoofed.