Yeah, I'm sorry but I agree with your provider as well. It is her business, and it is a contract that you signed. Flexibility is a positive of a home daycare, but if this is something that she is NOT flexible about then this is why you are receiving this reminder. Switching up the days at random would not work in my home either...other things I am not flexible about are the Fee Schedule, Nap Time and my Illness Policy. Your provider works hard, and makes a plan (crafts, activities, outings, etc) according to the number of children she has in attendance every day, and grocery shops week to week depending on attendance.
And this is her business, and you signed the contract- she is not working for you, you are using her business. Just curious as to why you signed the contract if you didn't intend on following her policies? Not trying to sound rude, just confused as to why you are upset.