subscriber services annette told me that books was 2.88 a week it turns out they are chargeing 50.00 a month arvada Colorado

subscriber services called me saying that i won a 250.00 voucher, and that i may purchase books for 2.88 a week ok 2.88 not much..before i was off the phone with them they had taken 49.00 dollars out of my account...i called them back and ask them about this what happen to the 2.88 a week that should have total to 11.52 a month they told me that its 49 dollars a month for 15 months...i told them i want to cancel this because i dont want books for five years..i told them this is too long to order books and too much money and why wasnt i told this at first before they got my account information...she inform me that i could not cancel anything and that i have to keep their sevices...regardless of what i think....