I will try to keep it short.
I care for 2 siblings after school (don't pick them up as from a school from other side of town to my kids school so a friend of their mum's drops them at my house), their mum never lets me know til at least monday morning which days they will be coming, if not coming monday she doesn't ring til tues or weds iyswim. Have asked her constantly to let me know no later than sunday 4pm. She is also always a couple of days late paying me.
Anyway to top it all the kids didn't turn up at all last week and her payment is now 10 days late, sent her a reminder after 7 days saying if not paid by 6pm that day would implement the £5 per day late payment fee. Still no payment today so dh has just dropped off another reminder and I have added 3 x £5 for late payment and have stated that will not have mindees unless payment is made in full and if she has to start letting me know in advance which days she needs me.
I know I should charge in advance but she works shifts so it gets so complicated to work out.
After putting up with all of this I still feel guilty for doing this as have never implemented the late payment fee before. Dh says I should give them notice, but I feel sorry for the mindees as they are so lovely.