I'm actually calling to inform them now
Followed by random clicking in the background. Googling around, it seems the same scammer is calling others and leaving the same voiemail. Has anyone actually picked up the call? Curious to know what they scam is about.
It's a clever way to get you to call back since it appears to be a legitimate attempt to get ahold of you based on the context of the message.
Report unwanted and telemarketing calls on the Do Not Call Registry - https://www.donotcall.gov/
For more info on telemarketing and unwanted calls see https://www.usa.gov/telemarketing
Don't be fooled.