Who called from 2156229629

i've been having the same thing happen to me for about 5 days. when i answer they hang up, when i call back, call cannot be completed

Same thing. This is incredibly annoying, particularly since it costs extra to get a number blocked on my wireless plan.

This person called me twice today.  The first time it went to voice mail where a blank message was left.  The second time I answered and it was a woman.  She said it was for a company out of Utah, and she wanted me to complete a survey and said I had entered for a chance to win $50,000 plus or some other expensive prizes.  She then asked if I had a visa, AX, MC, etc, credit card.  I said I wasn't interested in taking the survey so she said ok, i'll transfer you to the automated thing so I can enter my info into the drawing and that is when I hung up.

Same thing happened to me.  How can we have this number blocked???

I have received two calls from this number - no message left.  I have traced it to a land line number in Doylestown, PA located on Rte. 202 and the line provider is MCI.