i need help on a dental issue, can somebody or a dentist please me?

ok so i have been having a cavity issue and in the very past, i've gotten a filling, before i didn't have health insurance anymore, so anyway, on my filling, my cavity is like growing out of my filling since my filling is on the front of my permanent front tooth, so how much does it cost to get it fixed and what would dentists do to it
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It sounds lie recurrent decay. If this is the case, then the dentist will have to drill your tooth again and get the rest of the cavity out and fill it again. The cost depends on how large the cavity was and the surface of the filling.
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