Who called from 6472591952

The caller identified himself as Abdul calling on behalf of a survey company Environics.  He was interested to know whether I or anyone in my household had purchased a vehicle since 2010.

I politely declined to participate in his survey.

A male called from this number and when I answered he said hello, I responded then he let the air go silent and hung up. No idea what the nature of the call was or who it was but annoying nevertheless