Hi everyone,
Where do I go from here? My ex has become increasing difficult and I want to know if I am being unreasonable?
The background: We have two children together and have been separated for 6 years and have somehow managed to stay relatively reasonable 
with regards to issues involving the kids. I moved with the children a year after we split, agreed to his request of parental resonsibility and now live 100 miles away with him seeing the kids every other weekend.
To start we would meet at a half way point on a Friday and then again on the Sunday evening for drop off and collection and I would on several occasions drive all the way up and back as I would make visits to friends and family in my home town so I was always conscious and to be honest a bit guily of him having to drive a way to get the kids as it was my decision to move.
However, the 'every other weekends' have gradually, over the years reduced to a Saturday morning to a Sunday early afternoon (his choice) due to 'Work commitments' which I have never moaned about. I have always been flexible regarding his holidays and decisions not to have the kids e.g his birthday, not being able to afford to have them, moving house, special occaions etc and I have always been prepared to swap weekends so he doesnt miss time. He has refuses to have them for a few days during the holidays as he 'can't take that much time off work'.
Over the last couple of years (since I have entered into a new relationship) though things have taken a turn for the worse. I understand it must be hard for any man to accept another man seeing his kids more than he does but he really has taken it to a new level. We originally made a private arrangement for the child maintenance that I received ever week like clock work but in the last year or so it has been a case of "you'll have it when I give it to you"!!! He would lie when asked and tell me it was put into my account for me then to check and find it hadn't, when the money does go in it is never the agreed amount and when questioned all I get is abuse, swear words and even threats to come down and punch me out!! 
On several occasions I have had to borrow money from my mum just to put petrol in my car so I can meet him to drop off the kids and I still dont get the money.
Since April this year he has gone much longer with the late payments. Money is so tight for me these days I have to rely on the maintenance (unfortunatley) and with the huge increase in fuel and the current ecomonic climate I simply can not afford to do such big trips in meeting him with the kids but I have carried on and kept my mouth shut for an easy life. If I ever question him all I get is abuse, shouting, nasty horrid insults and so on.
It all came to a head last month when I text him giving him the amount due (as he hadn't paid in 3 weeks)... I then got a phone call again telling me to mind my own fing business, stop hasselling him for fing money, I'd get it when he decides to give it to me and for me and my f*king boyfriend to f*k off. I simply replied in a calm manner (which he hates) that if I havent got the maintenance money by that Friday then he would have to come and collect the children because I couldn't afford to put petrol in my car (it's about a 90 mile round trip). He told me to.... yeap you guessed it... fk off and that I wasnt getting a penny of his money and that the CSA could go f*k themselves too.
Since then I have not received any maintenance, the CSA have tried contacting his employer only to be told that no-one of that name is employed there and he's not registered self employed. He hasn't returned all the necessary forms to them and when they call his mobile, he doesnt pick up. He is now refusing to co-operate with them, refusing to give me any money and now informs me that he is consulting a solicitor. He is coming to pick them up from my house this weekend as I have refused to drive to meet him. I have and never would stop him from seeing his children, I am simply saying that he will have to come and pick them up and drop them off. I work part time term time and earn £6,000 a year, claim tax credits etc and he earns over £30,000 a year.
So am I being unreasonable in expecting the child maintenance to be received on the agreed day every week at the agreed amount? Am I being unreasonable in expecting him to come and collect the children? Don't hold back, I will be the first to admit I'm wrong but this time I am determind not to be pushed around and BULLIED by him.