Phone calls with Linny

I am writing this entry to voice my frustration with the telephone calls, or lack there of, with Linny. For several months now I have been having issues with contacting her. My ex has never been very good about letting me talk to our daughter. He usually says she can't talk because she is playing, or in the shower, or eating, or doing her homework, etc. I ask for a call back when she is not busy and occasionally, about one in three times, I actually get a call back. Tonight's excuse she is just getting out of the shower. So now I wait for a call that I'm not sure is even coming.
This is not the only frustration. On top of not being able to contact Linny regularly her father has taken to telling her that I am not attempting to call her at all. He also tells her that if I loved her I would call. She doesn't get to listen to my messages. I leave one every time he doesn't answer. Then I have to listen to her telling me all of these things that he is saying to her when she comes home. Linny is ten years old. It hurts me so badly that she is going through this and that someone who is supposed to be supportive and loving is planting all these negative things in her mind.
There is also the fact that every time I talk to my daughter he makes her talk on speaker phone. In our parenting plan it specifically says that there is to be no monitoring of any communication. Yet every time we are on the phone he has her sit with him and she tells me "Mom you are on the speaker".