Been calling my cell everyday for a few days now and leaving no message.  

Grrr.

I finally answered. They asked for me and when I said it was me speaking the woman responded, "No. No message. Thank you" and then hung up. I too called back and the message said it was out of service.

The caller identified herself as representing the "Maguire Research Company" and asked me several questions about American public policy. My BS detector was on high alert, and I didn't sense any foul play. The only information I provided about myself was my age, ethnicity, and zip code. I didn't give her other information such as (for example) my income.

receive call from number, but not in service

We get many of these calls on a daily basis.  We never pick up the phone.  This is just getting so old.  You just don't know if it's an important call or not, and yes I have missed some that should have been answered.  How do we know when to pick up and when to not.  Gladly I did not pick up this one after reading the other posts.  Wish this would stop.