Who called from 7155140057

I keep getting calls from this number.  No message.  When I try to call it back I get a "your call cannot be completed" message.

keep getting calls from this number for the past 3 days. when i answered the first time they hung up the 3rd time a lady said i won a shopping spree online and then preceded to ask me questions about whether or not i was working, where i used to work, my age and if i was in school. then she hangs up. when i tried to call back it said my call couldn't be completed.

I keep getting calls from this number. No message either. When I try to call back, it says "your call cannot be completed." Phonebook results have it as a physical address.
http://www.google.com/search?q=7155140057&hl= ... Cw&ved=0CAYQ_wI

there is no one there when I pick up but my call id shows it is:

Steve Allen
2508 Blakeley Ave
Eau Claire, WI 54701

I keep getting this call as well, it drives me crazy. How can I lock them? I start to get those calls just b/c I filled out a online form. I was a victim.