jobu

I don't know if this is the right forum to put this in but it is a how to question. Here is my problem. Recently somone signed my name to a petition that I want no part of. I received an email stating that i had signed this petition. I responded to the contact stating that there was some mistake and that I wanted to be removed from their list. I have gone back and forth with this person and have basically been told that my name was staying on their list. Is this legal? How do i protect myself? Any comments would be greatly appreciated.

Thanks