Got this number calling me multiple times. Never leaved voicemail, when I call back it's just a message saying "please leave a message". I'm blocking it.

This is a Nebraska based number.  When you answer a robo-call says you can reduce your interest rates, press 1 to speak to an agent.  I pressed "2" as this is sometimes an opt-out number.  It connected me to a guy with an Indian/Pakistani accent.  I told him I wanted to be removed from their call list...he hung up.