Please tell me you are not with WeeWatch they are crooks...
However the Home Daycare agency policy is probably that they Provide a service they don't guarantee that you will like it. If your provider quit on you they should be finding you alternative care for the remainder of the weeks. If you choose not to use it they will bill you a reduced daily rate (as if you were not using back up care during a providers vacation) The whole thing is they contract the providers so they technically do not have to give any notice of termination of care....

If you take this to the head office many times they will not make you pay especially due to your circumstances.

Good luck