Good god i can't believe how this ended 
I am sorry that was a long wait it wasn't that long a conversation but I've been cleaning up vomit off the door step 
So my husband answered the door and they were both there, they were overly sweet and he was very stern ha, she asked to come in and that I was expecting them! He said no what do you want, I think she's been quite clear in her answers to you. I appeared then from behind him ha and she started say how I had said it was fine and they were banking on me. That it is too late now for them to get any child care and that they can not afford it. It was selfish of me to agree to favours and then drop them in the shit last minute! I explained that the only thing that was asked of me was the odd favour not permanent holiday childcare everyday! They both kept saying that they thought I understood what they ment by that! And it went on like this for a while in circles. Then she said so you can see what a pickle we are in will you still do it for us. I said I am not prepared to do it now. So she went batshit saying I don't understand what it's like to work and juggle kids I'm lucky because I have no worries all day that I live a life of luxury 
and the least thing I could do was help them out. Especially as they have booked their 2 week holiday for Disney world in october and paid it so have no holiday left or money to pay anyone.
And get this was I really prepared to be responsible for their children not to go on holiday! And they would let me tell them the news, that I had ruined their holiday. She was screaming at this point.
Well the next bit happened so fast it was like a comedy sketch.
I asked why they can not stay alone for a few hours and have a few people as emergency contacts. She said that's child abuse and I'm telling her to neglect her kids, and she will ring social services on me for suggesting it!
Nosy neighbour and wife actually came out drinking a cup of tea pretending to inspect their grass, then my husband totally lost his cool and I love him for it!
Stating very loud that he works hard to provide for his family and that it enables me to be a stay at home Mum for his children and his alone not for any old strays or so that they can go to fucking Disney world!!! And discussion was closed.
Well she stared sobbing very loud more of a walling really and next door was getting very interested in my grass lol, then my son who is off school poorly speared and said I feel sick walked over to me looked at "friends" and spectacularly projectile vomits all over the door step and her shoes
Husband now told them to sod off or help clean up! And she just said see you tomorrow if ds feels better and left
So I'm not actually sure how it went to be honest?