They call day and night in Spanish and play a quirky message telling to hold on the line because I've won $1,000 dollars.
I reported them to the Federal Communications Commission (FCC) at:http://www.fcc.gov/complaints
I've had more than a dozen calls from this number since October 2013, with the most recent being today. I answered it once a long time ago, but no-one spoke; since then I just ignore the calls. They never leave a message.