to refuse to pay

[ImNotDancing]

you may have seen my post recently regarding really bad toothpain
I have managed to work out it's related to a filling I got in November
I have also managed to secure an emergency dentist appointment 🎉

Would I be unreasonable to refuse to pay for any extra treatment they have to do, given that before I had the filling put in I had no pain and I have essentially just paid them to put me in pain already?

In all fairness, it's incredibly frustrating to go in and ask for something specific and be forced to go down another route and then be charged for that route. Only for said route to fail and cause you more pain than you were in beforehand and have to go down the original route which you will then again have to pay for!