Oh yikes - I am so sorry that your mother is just like mine. I try to get her to listen to reason and facts but she will have none of it. It's exasperating, isn't it? I have not hung up on her as my daddy would rise up out of his grave and take me to the woodshed. But he did teach me to speak my mind - just better not be disrespectful to my mom no matter what.
My dad is still alive but calls me a facist..LOL