I thought it was just my ex that came off with shite like this. Today's gem was threatening to take me to court, to be allowed to see ds. Even though he was/is allowed to see him. Because when the time came for him to see ds, it didn't suit him anymore.
He said this morning that he was free all day, and didn't specify a time to see ds, he just said "later". Just as my mum brought ds back and I text ex that ds was back, ex was invited round to his mates (his relative he lives with/I get along with really well squealed on him). As soon as his mates contact him to go for a drink, everything else is forgotten about, even ds 
I think the screaming about court down the phone at me, then hanging up before I could reply, was as much for his friends benefit as anything. Easier to blame me for not allowing access, and have everyone feeling sorry for him, than admit he's allowed it but 95% of the time would rather be with his mates or in the pub... God forbid these "friends" of his ever actually realise how much of a deadbeat dad he is...
He also once asked why he had to contribute towards ds's school uniform (he wasn't paying maintenance at the time), when I get a uniform grant. He thought I should be able to get uniform (including a new coat), shoes, bag, pencil case etc, for £30
. He also still moans that he's not allowed to take ds anywhere unsupervised, or have him overnight, seems to have already forgotten that's because ds was removed from him and brought home by the police, because they deemed him unfit to parent in the state he was in (drunk or on drugs, I'm still not sure which). Clueless, useless, feckless bastard!