surplus supplier dri shopper I canceled the subscription and they would not refund my money then they charged me another 39.95 two weeks later Internet

I applied for a job as a mystery shopper and when i applied they said i had to sign up for three magizines. I was also charged a sign up fee which was $3.95.  When I canceled doing the job after i found they charge you a monthly fee I was then charged $39.95.  Now four months later they charge us $97.00 for three magazines that I dont want. If I canceled the mystery shopper then they should stop charging me money I dont have. My bank account is now overdrawn from a company I did not authorize to take money from me.