Have gotten calls from this number several times. Finally answered and a recording said it was for some survey about illegals, hung up and then filed a complaint with the FCC.
Go to the following link for the FCC and file a complaint. The calls should stop then.
http://esupport.fcc.gov/complaints.htm
Have used this for other numbers that have called and were either hang ups of some other BS. When I filed with the FCC the calls stopped.