Robocall.  Claimed to be a survey for Fox News.

Unwanted robo call

I answered and heard something like is your mom there and they hung up.

Caller asked if I was Megan. I responded, "No, this is her husband." He quickly responded "I'm sorry I'll call back." and hung up before I had a chance to ask who it was. I called back and the recording says it is "The 2016 Campaign" and says it is not paid for by any candidate.

For what it's worth, a complaint has been filed on donotcall.gov.