My current nanny job is term time only - I was asked to do 4 mornings paid overtime. Then 2 days before the 1st morning she texts saying only need 1 morning stating the Monday one she needed as the children were going to Nans. All agreed. Then get a text late yesterday night saying she needs to swap to Friday morning - all ok.
Tonight I text one of the Mums from school to arrange play date etc to then be told that she had my charges today as mum boss wanted free childcare.
Not only have I been messed around but lied to aswell. Shall I say something
I don't know what you can say really? You could maybe mention the messing you around bit. I don't think that what she does with the children on her time is any of your business though i.e. if she sends them on a pladate with another mum or sends them to their nans, it makes no difference to you and you are not entitled to be informed that her plans have changed (unless that change effects you obviously).
I understand it's annoying if you'd been counting on the overtime, but who isn't trying to save money where they can in this economic climate?!
Sort out the overtime issue, come to an agreement that if overtime is scheduled, if it gets cancelled with less than x hours notice, then you still expect to be paid. They may not go with that but it sounds like you need them to realise that whilst you will do overtime you do have plans yourself so cancelling the overtime at short notice is not on.
What the other mum does for their friend is their business.
What she does with the children when they are not in your care is none of your business. How she treats you with regard to booking, changing your hours and cancelling you is completely your business.
You need to proactively look for holiday work - I'm sure there are others out there that need to have some childcare in the holidays.
There needs to be a formal agreement that if she books those days you will ONLY consider it to be a formal booking (and therefore not take otherwork) if she pays at least half the rate if she cancels you for any reason. If she won't guarantee to pay you, then you can't guarantee that you will be available.
You can say that this is based on what has happened this week, and she doesn't have a leg to stand on.