Ok so me and my DH have 6 kids all together soon to be 7- so he has 4 from previous relationships
His 2 oldest sons live with me and now attend college (one woman) , his DD is 10 (2nd woman) and his DS is 9 (3rd). Doesn't sound great I know it doesn't but things happen- judge as you wish! I have opinions on it also but....
Every year we get uniforms / college clothes at end of June, I like to be organised. This year the oldest boys didn't need anything and their mum (who actually claims for them even though they live with me, don't ask she's an utter arse isn't worth the argument for their sakes) said she would get the little things they need.... she text last Wednesday saying can we get their new coats an trainers for school as she hadn't! Really annoying the fact we never ask her for anythin an she does this the day before. We ignored her and just got them anyway we wouldn't let them go without even though it isn't bloody cheap !!
That's my first annoying mother to deal with
Second one - DH doesn't actually pay maintenance for her as we see her twice during the week and on a weekend she comes away to our holiday home with us and the agreement is we pay for all her activities- swimming cheerleading and gymnastics then a private tutor to help with math and English and her mum won't do any at home with her like we do (bbc bite sized etc) so she needs it when she's at home to help her as she gets upset in class because she struggles. We got her school coat, shoes and bag which cost us near 200£ this year as she knew what she wanted an the older lads pick their stuff also. Her mum just had to buy the basic uniform. We've been called rotten for this an tbh I don't think we've been unfair ? We go half for everything she has like clothes etc and she goes on how the other kids get treated better etc- they really don't Easter they all get the same stuff. Xmas they get the same so on... pissed off
Then number 3
She's an arsehole who doesn't let my DH see DS (he's known as the man who buys him things) 
but we pay for him and buy him every occasion and all for school but this year she sent a list with what she wanted. We got every single thing and asked to meet her with them as DS doesn't really know who we are Iv never met him neither have any of the other kids. Then she ignored us an didn't collect them? Why play such a stupid game!! I'm so annoyed I feel like we get walked over or am I wrong