it all sounds very familiar to me too. i dont think you should feel like its 'tattle-tale'.
my xp and i had mediation well before christmas and all the contact arrangements were agreed by us and written out. i went the mediation route to avoid paying out for a solicitor and to avoid being messed around every single weekend by my xp [as he has done for 2 years] and because i truely thought that would be enough and ive heard positive things about it. he used to show up an hour or even 3 hours late and bring them home 1 hour to three hours late, not answer the phone to me when i phoned the children to say goodnight etc.
all that was sorted ... and it lasted for one week!
it's been two months since, and this weekend we agreed he would bring them home at 4pm as it was school the next day and my son still had homework to do. instead of which i got a text at 3.30pm saying he had decided to take them out and wouldnt be back until 5pm. then at 5.30pm i phoned [no pick up], so had to text asking what time they were coming back [getting worried], and got told it would be 45 minutes. then when i asked to speak to my son, my xp's new partner texted me and said 'you forgot to say please...' [after 3+ attempted phone calls and a simple text saying 'can i speak to ds'.
when they got home at 6.30pm i was fuming!
anyway, the upshot is that i am fed up of waiting around for him and every weekend i have had for the last two years has been stressful and wasted because of his behaviour. he too says i am controlling and it is sooo frustrating.
so now i have told him that he needs to see a solicitor and go the legal route as he is blatently breaking all the rules in mediation. what else can i do? the only problem is that i cannot actually afford a solicitor myself, so i don't know what will happen. but i know i cannot live a life like this indefinately-it just isnt fair on the children or me.
sorry, i dont know what to suggest, only that i hope your xp can see that it just isnt right to treat you or your dd like that. I would still try mediation in the first instance, it just didnt work for for my xp and me [think it was because he thought i had to much of a 'say', or because the mediator was female...who knows?] anyway, good luck.