Dental Works review: charged for work that was never done

This company billed my insurance for 2 fillings that I never had done. They are aware of their mistake and each time I call I am lied to. They tell me that they are working on it and someone will call me back. I have never received a call back. They lied for months that they contacted my insurance company but my insurance company has no record of that. They also owe me the money I paid for the 2 fillings but to this day I have not seen a cent. My insurance company wants me to submit a claim for fraud. I just want my money and my insurance reimbursed so I can get the work done somewhere else. I will never go back here and I suggest no one else go either.