Random calls leaving no messages

I picked up my phone after geting the call randomly and said hello and waited for spmeone to respond, and tgen said hello two more times but nothing so i hung up

This was a recorded message on my voice mail asking me to press 1 to talk to a representative, 2 for spanish, and 3 to remove from their call list. I deleted the call, and reported them to Do-Not-Call.

Received call for refinance.. .