Medical Billing Dispute - dentist damaged nerve during procedure

I've been trying to resolve this on my own but I'm stuck.

dentist damaged nerve during procedure. I've been dealing with this for about 3 months now and the situation isn't improving.

I have already consulted briefly with a lawyer but the other party is not cooperating.

Am I overthinking this or is this a real legal issue worth pursuing?

I talked to a lawyer when this happened to me. Worth every penny tbh.