Who called from 3152174272

I got a call from this number and they didn`t answer...I hung up and looked for comments on it..I  make it  a habit not to answer calls I`m not familiar with ...and look for comments about it first.  if  it has bad reviews I list it on a sheet of paper and keep it handy  and I an check to see if it`s  a bad idea to call back...

This number called my dad adn told him he won a sweepstakes. They tried to set up an inperson meeting!!! Trying to scam the elderly