This will be a ramble so apologies. My ExH has done his usual again and I suppose realistically I am unsure how best to deal with him long-term as I am so fed up with this pattern. There is SO much backstory to this one that I won't bore everyone with but this man has put me through years and years of abuse; broken bones, emotional abuse, financial abuse. It really does just go on & on. But he's not my problem anymore, for the most part!
Anyway, to the point:
Was with my ExH from age of 14-23, divorced now around 8 years after there was a "final straw" incident so I just had to pack a couple of black bags and hoof it to my mums for a year until I could get myself sorted with a new place etc. We have two DC aged 9 & 10. Over the years I have always done everything I could to ensure contact was kept (where possible, there have been episodes where social services stopped him seeing the kids due to violence to myself after we split, and also DV with newer partners. He has been through relevant rehab/counselling/medication for MH since and seems a more stable person. The drinking was always his main catalyst).
He was a horrible husband but on the whole, a decent father in terms of maintaining contact when he could, and I never had any concerns he would hurt the kids. The general pattern we have maintained is that he has the kids at weekends. We are fairly flexible in that if he has plans, I would just keep them the weekend nights he wasn't free etc and if I was going away for the weekend (as an example) he would keep the kids to maybe dinner time on the Sunday. However, over the years it has become a control thing with him. If he knows I have specific plans, he will wait until the 11th hour and all of a sudden he isn't able to have the kids. This obviously upsets my plans, and upsets the kids. My son (10) isn't overly arsed about seeing his dad but my DD (9) thinks the sun shines out of him 
So, this weekend coming is my birthday weekend. He didn't have the kids at all last weekend as he wasn't free (moving into his third new flat this year. He is nearly 40 and doesn't have so much as a pot to piss in - the kids stay with him at his gf's house at weekends). Anyways, no big deal for me, the kids and I spent a lovely weekend doing fun things. But when he cancelled last wknd, he said he would have them all this weekend to "make it up to them" ( full weekend for us translates to Fri & Sat night, pick up Sun afternoon). I made plans accordingly for my birthday. Now he messages to say he can only have them on Saturday night, dropping off at "x" time and collecting again at "x" time on Sun morning (super early so no hangover lie in for me). I'm enraged. When I told him that he can't just go changing plans on me when he knows its my birthday and I will have made plans he accused me of being a selfish tw@t and that "I was doing my usual and throwing a strop when I hear something I don't like" - I mean, who would like it?! Surely it's normal to be annoyed when someone changes plans?! Anyways, I told him to take a flying f@ck to himself, that I would happily keep the kids this weekend and that he wasn't doing me any favours by having them for a select period of time of his choosing. Then he blocked me on WhatsApp so I couldn't even respond to his nonsense I got sent after that.
This man hasn't paid any maintenance in 8 years, and all I ask is that he feeds the kids once or twice a week. He hasn't bought them so much as a pencil for school, or a pair of socks in 8 YEARS! (he has a whole list of MH issues so doesn't do "real" work I can chase via CSA, although I do know he does cash in hand work that I never see a penny of, or can prove exists)
I personally think he should consider himself lucky to have any contact with them at all but he doesn't see that. He thinks that as I have a lot of free weekends, I should kiss his feet and give him a medal. I would LOVE to tell him to just disappear, but the kids would be gutted (well, my DD would be), and it would rock the boat massively. Although I got myself out of the situation with him all of those years ago, I do know what he is capable of, and I do what I can generally for us to just bumble along civilly. But its just becoming such a pattern that I wish he would get hit with a bus 
