[RWebb]

different people have different levels of expectation about care for their pets, and ability & willingness to pay vary greatly

your vet may have just tried to give top quality care -- maybe

did the temporary pet caretaker ok the add'l treatment (hence billing) -- sounds like it, but not sure

I personally would not come down on them legally for this (complaint to VM Board) but I would talk to them. You are the client and you need to be clear on what level of care the patient gets (note those 2 are always separate in Vet. Med.).

They should volunteer to eat the extra costs tho. See if they do. IF not, you might dispute it with the credit card co.