The insurance company did nothing. A person working there did. These people have names and addresses.
I recently had a endoscopy - routine - and the hospital put in a wrong code that suggested the procedure was ended prematurely. Insurance said they do not cover that. We sent them the doctors notes, the pathology reports, the recovery notes, etc. that priced the procedure was fully performed. hospital kept saying they had coded it correctly and we owed them. It took months on the phone for hours at a time to fix an obvious clerical error that would have cost us $3,000 This situation is tailor made for my wife, she never lets something like this go. Ever. Once it was fixed insurance paid promptly. But i would have given up and paid because they’d have worn me down. And that would be the last routine endoscopy I ever got, which is dumb but that’s how Id react, I know it.