It's likely a contracted war dialer. The recorded message from the last call was for Consumer Debt Advocate. They seem to rotate between several originating numbers. They've called previously using 406-290-3003
Their website is www.consumerdebtadvocate.com, and their number from the website is 800-258-0973
. This is the only one that will get you a human being to complain to.
Not that it helps. If you complain or block them, they just rotate to a number you didn't complain about yet.
Also, be very careful about what personal information you give them. The calls to the 800 number are suspicious. For one thing, I keep getting the same person on multiple calls. In my experience, it's pretty rare to get the same operator when calling a call center. Also, sometimes, I can swear the guy sounds like he was just waking up or was eating. Those are not signs of a legitimate, let alone professional operation.