Sometimes you need to just let people have their litle tantrums and move on too. They are mad that you stood your ground BUT they did come and pay ahead of time as compared to at drop off today. Dad is in his own way trying to let you know he is mad without saying anything - adults especially men are good with the silent treatment and the passive agressive.

Your other option is to let it all go and I know that is hard to do but give them the chance to get over it - there is an element of embarrassment too besides the anger. Just continue to at normally and see what happens. Give it till Friday to see if everyone settles down, yourself included and then see if the relationship can continue or not.

I know this was a last straw thing but it was resolved so to speak by you getting your payment including penalty by the deadline you set so they are in a way in good standing from today forward. Now having said that are they actively looking for alternate care who knows. But I might be inclined to give it the rest of the week and then if the attitude does not improve then you have grounds for negative behaviour. For today everyone is upset and nothing negative was actually said. Sometimes silence is golden.