Thank you for your comment. Believe me I know it's his decision, this is why it was such a difficult issue for me, I had to wait for him to decide to do something about it.
In the end it turns out it was all a misunderstanding. He said talking to his mother about calling so much was easy and he would do it right away, he thought I wanted something else.
He thought because I kept saying I didn't have a relationship with her that I wanted one and that I wanted him to match make and help us get one. So he told her I wanted a relationship with her after 12 years. Now she's on me about doing lunch or shopping or something when she gets time. It's a funny situation!
I'm fine with not being close to her, we're entirely too different to be really close and I've accepted the way things are. All I wanted was for her to have a little more respect for my husband's time and family and not call every time she gets a random thought in her head.