It's legit, really Jill Stein's phone bankers. Some are better at it than others, that's why there's complaints.
https://m.reddit.com/r/jillstein/comments/50v ... ing_complaints/
Just received a call from this number asking to make a pledge to Jill Stein. He was rather pushy. When I said I'll just do it later on the website, he hung up on me. I hope he's not going to charge my card. I hope they did not keep my credit card info in their database.