My son wont speak to me, how can i resolve it?

She sounds like a control freak and until your son sees her for what she is he will never change his attitude towards you. She's probably kept on about you so much that he is starting to believe what she tells him. She sounds as if she is very jealous of you for some reason. Maybe it's best to stop all contact for now and let your son make the first move as hard as it may seem, give him time to think things over.