Not exactly the same number, but the same people, circumstances a lot like the guy above reported. The number on my caller ID was 302-752-1422. He asked for me by name (Philip, with heavy Indian accent) and I told him no one lived here by that name, LOL. He asked me to verify the number, which I did, but I told him there was no one here by that name. Then he launched into his spiel and I hung up on him. I have had good results in the past by claiming they had the wrong number. Hope it will work this time too.
Different number, same people. They asked if I was the person in the household who had diabetes. I asked how they got medical records. They said someone in the household had filled out a form "recently or sometime in the past" saying someone in the household had diabetes. I replied "I was the only one in the household, and had never filled out such a form. May I speak to a manager?" click
Next time, reply, "Oh, yes, you mean Joe. Will you hold on while I get him?" Then put the phone down until it complains that it is off the hook. Every minute they wait will reduce their call volume and salary. You can extend the game by checking in a minute to see if they are still there. If they are, say "Joe will be just a few more minutes. If they could please be patient, he will be with them in a moment."
It's very satisfying, without costing you much time.