Business ProfileforTriad Eye Medical Clinic

I had two procedures for cataract removal. The first one was on my left eye on 03/21/2022 $1,852.00 the second one on my right eye was on 03/30/2022 $1,462.00. I paid my part for each procedure on the dates of service and the remaining balance was put on a Care Credit card through Triad Eye Institute. This was a deal they had with Care Credit that was a 2 year no interest plan. A couple months after I was done with my second and final procedure I received a bill for an additional $2,090.00. When my contract with Triad was signed by me and Melissa Turick (spelling ?) she had verified my insurance with $500.00 deductible $2,000.00 out of pocket/ 10% co insurance. This is the Tier one level of benefits for my UMR insurance. However they billed the insurance at a higher Tier which made me incur a higher bill. I have called them numerous times regarding this error on their part for this billing error. The last call I made on 12/27/2022 was a three way call between myself Rhonda from UMR and Rhonda from the business office at Triad. She even stated on the recorded line that she saw where the contract I signed was at the Tier 1 pricing and billed at the higher Tier pricing. I feel this was fraudulent on their part. I wasn't told about this additional bill until after the procedure. I would have made another arrangement for payment or gone somewhere else. I DO NOT have the money to pay monthly for their mistake. I am already paying Care Credit $150.00 a month and I financially cannot pay any more. Please help me with this matter.