SO baby momma drama!!

So for the time we get them in the summer she said no not until she had a address, so we gave her it and she said no still (because of me she doesn't like me she thinks I'm the reason they aren't together blah blah) so now we were on the phone with their daughter and trying to ease her some knowledge of me to make her a bit less confused especially if we do get her this summer for a bit. Well her mom grabbed the phone and hung up when she heard my voice. So we called back and she said she will not allow me to be on the phone that Emma is very confused and doesn't know who she is. 
Well duh!! You won't let her!!!!!!
Anyways so Emma had told us they have a new house!! So he texted her asking for the address the kids will be staying at and she won't answer.
I'm getting so sick of her and her fucking control issues over every situation!! She won't follow the court order! We have contacted several times for him to see the kids before we move to Arizona and everytime she says no.
She won't talk to him about anything regarding the children answer any texts or phone cAlls. And he gets less than 5 minutes a day to speak with his daughter before she grabs the phone and hangs up! 
So furious!!!