Why do advertisers call my cell phone?

I'm at the point where I'm getting terse and extremely rude at them because one called and asked if I had bought a Honda civic in the last three months at 9 AM for some reason. (It woke me up) Every time I tell them I'm only 14 and that I do not own a car or any property. The cell phone is under my name and not my parents' names. What can I do?
Added (1). Also one of them called a week ago if I was 65 or older and I said no and then they called me the next day and asked if I was 55 or older and I told them to stop calling me and they did.

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