Subco Inc Receiving a ton of Magazines I never ordered Fresno California

I have been receiving magazines such as Forbes, Better Homes and Gardens, ESPN, TV Guide, MotorTrend that I never ordered. When I called the customer service number for these companies I was told the subscriptions were set up by a third party called Subco Inc. I then called Subco Inc and was told that someone there must have spoken to me about signing up for these subscriptions. I informed them that I never spoke to anyone and that I wanted everything canceled. They told me to list the magazines I was receiving because they did not have a list of what was being sent to me.