They overbill. They are really just for getting your money. Messed up my sceldule and tried to get me to pay for an X-Ray to kill time. If you ever go there please double check what they put in your bill.
I am sure I'll get an apologetic response. They are very friendly and they have no problem apologizing, but that all feels like an insincere marketing tactic. Part of the getting your money focused business model.