Long post... but please bear with me :)
Bit of background... XP (DCs father) has always been pretty supportive since we split, he's (until recently) had a fairly good relationship with DC. He had remarried and now has 3 other children.
Some disagreements about the amount of maintenance I received at the beginning of the year strained the relationship and we decided to arrange payments through CMS.
At this point DC had started expressing to me that she didn't like being at XPs with varying reasons why. I contacted XP about this and was ignored. When pressed by me to try and get to the bottom of DCs worries, I was contacted by him to say that I should not contact him again other than by email as he had been to see a solicitor about regular access and wouldn't be answering calls our texts from me again.
Anyway, the no contact thing although annoying was what he wanted and I wasn't willing to get into a debate with him. He's a very condescending person who is never in the wrong 
Fast forward a few months and after arranging childcare and school holiday activity clubs, DC decided she wanted to spend some time with him and his family. No problem with me, she had been visiting family in the area and it made sense.
My issue is that at no point has he spoken to me about school hol arrangements, what DC is doing and when, but having spent sometime with DC has no made arrangements for days out, trips etc. Without my knowledge and without confining with SIL who DC is currently staying with. Again, not a massive issue, up until the point when I read messages on DCs tablet (from XP to DC) berating her for not wanting to go on the days out and asking her not very nicely who had made these plans behind his back.
DC is understandably upset, as she thinks she has let everyone down. I am PO at the way it's been handled as we had a similar problem a few weeks ago with a situation that involved a family wedding, at which point I broke the rules and contacted XP to say that to avoid clashes in future, arrangements for DC should be made between us.
I really want to have it out with him, the way he's being towards DC is only exacerbating the issues DC had in the first instance and to try and push him into regular access being sorted to avoid future situations.
I don't want to be the one to stop him seeing DC, but I think that their relationship is starting to sour to a point where it's no longer in the best interests of DC to be made to spend time there. AIBU?