I had a very similar experience with Cigna and a US healthcare provider. The provider was not getting reimbursed from Cigna and Cigna was saying the provider wa

I had a very similar experience with Cigna and a US healthcare provider. The provider was not getting reimbursed from Cigna and Cigna was saying the provider was not accepting the reimbursement. I got nowhere talking to the provider’s billing department. I finally got it fixed when I called the provider’s corporate office. I’m not sure if that applies to your situation, but see if you can talk to someone outside of the billing department. There are also businesses called Healthcare Advocates. You can hire one of those, but I can’t speak to it.