Robocall for a "service" to lower your credit card interest rates. I pressed 1 to speak to a representative to demand they put my number on their DNC list - unlikely to do any good, but worth a try. There were 1 1/2 rings then I could hear a lot of voices in the background - a very obvious call center. I said (ultimately shouting) "Hello" at least a half dozen times. I finally said "Answer me or I am hanging up." The [***] hung up on me.