Can't believe we are getting close to a full thread 
I've had one recently
very long one, sorry
Talking to a school mum before kids broke up about having really saved up to go somewhere the DC will really enjoy on x date and how excited they were (after her telling me about the 2 week holiday abroad they are going on, and asking what we will be doing over the summer)
Activity was on the Friday, that Monday i got a text inviting 1DC over the following day, asked me to provide lunch for her. So off she goes with her lunch. I go to pick her up and was asked for £2 because the ice cream van came round and they got ice cream, so I went and got it out of the car and gave it to her - absolutely NO problem with providing lunch, £2 seems a bit
but again I had no problem with this
Then she drops the bombshell - "since we had 1DC today we thought you could have our 2DC on Friday
they are really looking forward to it and I've told work I can go in so it's all worked out well hasn't it"
I had to pick my jaw up off the floor and kind of spluttered out that we can't have them Friday, that's when we are doing x, she said "oh is it friday? I couldn't remember" lying bitch "even better, they've been saying they would love to go there, they will be so excited, tell you what I will give you £10 to get them all a slush or something, my treat!"
I was stunned! She had 1 of my DC for a playdate which I was told was boring as they basically just watched tv for a few hours at her suggestion, and I had to send a packed lunch and pay her back for an ice cream...she has just decided that I will take both of her DC all day, to an expensive activity that she knows I've had to save up for, expecting me to pay for them both, and I presume lunch would have been on me too, and she's acting all generous offering £10 to pay for a slushie or something for 5 DC (My 3 and her 2)
She called my DD before I could say anything but then I just told her that it wasn't possible, it's something we were looking forward to doing as a family and they wouldn't fit in the car anyway. All three DC arrived at this point and she said to her DC "TellMeItsNotTrue has said she doesn't want you to go with them on Friday anymore" making me feel awful, and they started whining that it wasn't fair, you said we were going to x I knew she bloody knew! and pleading with me to take them. She just kept sayings "TellMeItsNotTrue doesn't want to" 
I apologised and said "our car isn't big enough but I'm sure your mum will take you instead" not something I would normally do but she deserved it! led DD away to the car and left. I drove to the next street and stopped the car because my head was all over the place
just told DD I had to send a message and pretended to be on my phone while I calmed down.
I felt so mean letting the DC down like that, I was even thinking is there any way I could do this
shows how they get away with it doesn't it, because you don't want to do it to the DC because it's not their fault their parents are twats!
She's told a few people that I know of and probably more that I don't
obviously it's her screwed up version where I promised her DC then let them down after using her for free childcare! The ones that I know of have been told what really happened
DC really enjoyed it but the day was tainted for me
which annoyed me even more