You won a gift card!- that sort of thing. Asks for credit cards and signs you up for all these coupon books worth hundreds or thousands and signs you up for all these monthly fee programs. Seems pretty sketchy.
I was told they recieved my number from 1 over 800 marketing parteners, but they could not tell me how they got my number. The people were VERY hard to understand and I was told a supervisor was not available.