I have been getting several calls since mid February 2013..
We just took a trip, and gave our cell numbers to a few hotels, Hertz car rental, etc.
Also just used TurboTax to complete our taxes.
I've been getting these for days now. It's a NJ number and I'm in CT so I didn't answer but when they persisted, I answered and nobody was there. Could they just be testing all numbers to see which ones are live so they can put us on some list somewhere? And forget about the "no call" lists. They don't work. I have our home and my cell on them and we still get the damn "lower your payments" calls daily. I used the form on the FCC site dozens of times. I did not use TurboTax or any other online tax service so I don't think it came from them. I may try the call back thing but I'm afraid they're collecting our numbers for some reason.