Aside from the first time where the person went 'Hellooooooo' in a mocking way that makes me think it's a prank call, they haven't said anything when I actually answer the phone.

I'm already on the Do Not Call list. I put it in months ago for both my home and cell so that should have went through by now. Because of the times they called, I don't think it's a telemarketer either. They have to call between 8 and 8, I believe. And all the calls have been outside of that range. I tried the reverse number look-up and nothing comes up either. I'm going by the station tomorrow to see about my options.