I didn't answer and they didn't leave a message. Called back from another line and got the message that the number is out of service, I suspect that it's a spoofed number. Spam or scam, either way don't answer.
Got a call from this number. Lady with heavy accent on the other end saying she was calling from a research company and would like to ask me some questions. I told her I spent over 10 mins two days ago answering questions and ask her what the questions were about. She said politics and legislators. I told her that's exactly what the previous call was about. She gave me the first question and it was the exact same one. I told her that whoever hired them for this data will have skewed data (I'm a data analyst) and she apologized and thanked me and hung up. Maybe legit, maybe not.