Winners Readers Service — Can not stap automatic withdrawal from account

A while back I suffered a traumatic injury to my face to include the lose of my eye. While I was in the early stages of recovery I apparently got a phone call to subscribe to some magazines. Now I get six subscriptions of magazines I have no interest in and they just go straight to the trash. Not only do I not want the magazines but I am in a financial pinch and barely paying my bills. The magazines were an inconveinience but now it is affecting my life and I tried to stop the automatic withdrawal of money from my account and they say they can not stop the subscriptions until the full amount is paid.