this number calls me 2-3 times everyday....i have them call blocked...but its still annoying

i received a call from this # stating i won a $100.00 walmart card on oct 25 , i have not received it and just curious was this a prank bcus it seemed real..the girl only took my verification of name and address. thankyou

i keep getting calls from this number at home and at work, when I try to trace it nothing comes up if you call it back a message comes on and says this number is no longer in service