AIBU re dentist to of hours charge?

[NoonarAgain]

I've just had to spend £500 having a crown made. It was huge. There was more hole than tooth and they put in a temporary filling. This fell out twice and each time left me unable to eat or drink due to extreme sensitivity. The first time the temporary filling fell out was on Saturday. It was very painful having it put back it. The second time it fell out it was even more painful, but during office hours.

AIBU to think that I shouldn't have to pay for the out of hours service? Why should I pay more for a bad experience caused directly by their work?

They now want me to go back in to the surgery for the 6th time relating to this tooth, and pay even more money.

They say I will be able to claim it back, but I feel they are adding insult to injury by charging in the first place. why should i face this extra inconvenience?

AIBU?

If your temporary fell off and you were seen at your practice during open hours, you shouldn't be charged for refixing it.
If you see a different dentist/ practice, perhaps an on call service? For it refixing they have to charge you as otherwise they wouldn't be paid anything for seeing you.
Are you suggesting your regular dentist discount the crown to take into account the fee charged for the emergency appt? They might do that I suppose, to maintain goodwill.

Also, and I bang on about this all the time, try and find a good NHS dentist.

I had work that would have cost over £1500 privately, for £219. That included replacing a failed filling with a crown 2 months after all the treatment finished, (as it was same tooth, same original problem, all covered under the one fee.)