Filling fell out on day 21

I had a filling done on 21 August and it fell out on 11 September. I called the dentist office to inform them. They want me to pay a full price for the filling to be redone. I spoke to an English speaking lady. I told her that I am not willing to pay again for the filling. I had fillings done by them last year May and I never had issues with them. This time they gave me a new dentist to work on my tooth. And the filling fell out.

She got me a Xhosa lady to call me back as if I didn’t not understand her English explanation. What is that? I am actually ****ed. The assumption that I did not understand the explanation the first time is actually what ****es me off. When I clearly told her that I am not willing to pay again for their poor service.Is this how they treat black customers in that practice? Get another Xhosa person to explain the same thing 🚮🚮