Who called from 8162271005

I answered; They said they are from some survey company; I hung up; I called back and it was a recording saying if you want to be on the do not call list press 9; I did, & then it said to enter the phone number to be put on the list followed by pound; It then said you are now on the do not call list

on going calls from this number. when i answer the caller hangs up