For a long time I have felt that I been losing my daugther love and respect. She turning twelve on Thursday. I try calling her she doesn't pick her phone. Her mother and I are not together. Her mother never tells me anything about her. All she talks to me about is money. When I call the home phone she always to busy to talk to me. Her mother claims she doesn't bring up and when her mother does she say I don't want to call him. I never see her anymore. And I feel let she hate me. I don't know what to do. I love her so much and I tell her that all the time. I spend her email, text and when I call her phone I leave her messages. She tell me. I never got the messages. Why is she lying to me.

I did the same thing to my father at that age. I was angry at my parents, and since I was living with my mother, and only hearing my mother's side of things I was taking it out on my father, feeling as if that was the right thing to do.
She needs to go to counseling, because obviously she won't talk to you, but she needs some outside guidance, so that she knows where to appropriately place her anger rather than displacing it.
Her mother should also keep all things about the divorce private until your children are younger and have a better perception of right, wrong, age, love and priority. I definitely think you should put any differences you may have with your ex and talk to her.

Hope this helps, I'm very sorry that this is happening to you.