6 calls in past 3 weeks. i did answer one long enough to hear some gal say something like "CDC" before I told her I did not want any more calls. These are only the calls I counted, there were many more. These are the calls that came after I told them to stop. We do not answer them, they do not leave a message. Someone else said to answer & press the 2 button repeatedly & it might zap your number from their system. I'm going to try it. After that, an air horn might work too
I recently got a call from this number. Like the poster above, I was asked to do a government sponsored survey. The person who called gave me the study's website to check out. Seems like it is on the up and up.