I accidentally answered one, but thankfully I thought fast on my feet and decided to pretend I couldn't hear him.
He would ask, "Hello, ma'am, this is--" and I'd say, "Hello? Hello?" and he'd repeat his name. "I'm sorry, who is this? And who are you calling?" This went on an on and I could barely stifle my giggles because I could tell he was getting annoyed but trying to say professional-sounding. Finally he said, "I guess we have a bad connection," and I said, "Guess we do," and hung up!