Daughter

I have a two year old daughter with my ex partner, which I left her about 10 months ago for my on reasons. Since then my ex partner has agreed on and off letting me see my daughter two nights aweek which i was more than happy with. But since Father's Day she has stopped me seeing her, an on that same day told my daughter to say bye daddy it's the last time your been seeing me. which broken my heart. Since then I haven't heard nothin from either my ex or my daughter untill yesterday when I received a phone call from my ex asking why iv not seen my daughter when clearly she stopped me. She is so unreasonable and is always changing her mind. I just would like some sort of order to see my child where she can not stop! I just wanna live my life away from my ex and see my daughter. And most important to collect my daughter without going to her house. I have no idea what to do? And so hurt as I'm missing my daughter so much! Please can you advise me in anyway possible? Many thanks... Lee