Business ProfileforMedical Arts Associates, PS

Hello, I had a medical visit in April. When I received the bill, it states I am liable for the full bill amount when according to my insurance, I only should have a small copay.Upon inspection, I realized this practice used my old insurance information ( thus no insurance discount/coverage was applied to to the bill). I provided this practice with my new insurance information, and I have contacted them several times (in writing, called and left voicemails). Eventually, I was able to speak to someone from their billing department a couple of months ago, who assured me they would fix this.The bill has not yet been adjusted. However, since July, this practice has been sending me emails and text messages reminding me to pay my balance. Since speaking to the billing rep on the phone, I have tried to contacting this business again but have not been able to get a hold of anyone on the phone or get a response via their designated message portal online. I am concerned about this going to collections and it affecting my credit score, but I also don't want to pay an incorrect amount on my bill. It feels a bit silly to be writing a complaint here, but I'm not sure what else I should do so that they will stop contacting me to pay the incorrect amount, and will adjust my bill. Once adjusted, I will be happy to pay right away.