The call from this number (DUMMYCOURSES) is an automated message about lowering your credit card rates. I hung up. I'm on the do-not-call list and don't like getting unsolicited calls.
If you listen to the whole recording it says Press 2 to stop notification.
I pressed 2, was directed to the same operator anyways, told her to put me on their do not call list, she instead asked if I was sure I didn't want to lower my rate, and upon being firm that all I wanted was to be taken off their call list, she hung up on me.
Yeah I got that call it's about lowering interest rates on credit cards, they are phishing for info. When I asked where he was physically located, he lied and said Orlando and panicked and hung up when I asked for an address.