San Jose Mercury News Won't stope my subscription and keep sending me bills, and unwanted newspaper and harass me with repeated phone calls San Jose, California

About four months ago a young kid knocked my door saying that he was a student who was arranging money to go to San Jose Sate University for studying Mechanical Engineering. He offered me a one week subscription of San Jose Murcury News for $20.00 and said that the newspaper company will pay him commision money to go to school if I subscribed. I felt sympathy with the kid and subscribed for one week ONLY. He also mentioned that this was one time subscription for one week only. When I get the phone call from the newspaper to confirm if I wrote the cheque of $20.00 that time I again reminded them to cancel my subscription and they did say YES to the cencellation of my subscription.

However they haven't stopped sending me bills each month even if they do not deliver newspaper. I got a phonecall a few days ago mentionig them that I wed them $40.00 (for no service) which I declined and reminded them about my cancellation request for the first time when they asked me for the confirmation of $20.00 chque that I wrote and gave to the school kid (no sure he was a school kid or a fake one). Today I again saw a bundle of the newspaper lying in front of my door which I had cancelled after first week. They are repeatatively harassing me and annoying me with their uneathical business practices. Kindly take the necessary steps. Thank you.