Business ProfileforHeritage Dental

I have been using Heritage Dental as my provider since 2020. I found them as part of my covered insurance and I asked them to double check that my insurance would cover all treatments, which at the time they confirmed. I went to them on several occasions. On 2021 I was informed that I needed to have cavities filled and I sat with the financial person for the dentist who went over my insurance coverage, and what would have been my co-pay given what was covered by the insurance. she informed me that the insurance will cover a percentage, and my co-pay would be of around $160. I made that payment on that day and schedule the appointment for my treatment on November 2021. On Dec 2022 I received a bill for $624.40 with no explanation. I called the company asking for further information given that I had not gone to their office in over a year. After looking into my case, the woman in charge of finance informed me that the payment was due to the fact that my insurance paid very little because it wasn't supposed to be covered and I was responsible for the rest and that she was willing to give it to me for half the price. She was unable to explain why they informed me over a year later, why this was not shared with me prior to getting the treatment even though I had been to their office on multiple occasions, and the reasoning behind the costs. She just said that it wasn't her and that if I refused to pay that she would make a note and is all she could do because I had the treatment and she would move it forward. I believe I am not responsible for this additional charge as 1) I was not properly informed of this and was mislead to believe the insurance would cover for the procedure. 2) I was contacted over 1 year later with no explanation. 3) they have no explanation as to why they didn't do their due diligence prior to the procedure. 4) They were negligent in informing the customer of all their information in a timely manner.