Problems with Center submitting info to insurance company

[circa 0]

Has anyone else had a problem with the Surgery Center submitting your information to the insurance company? Mine neglected to send everything that was needed, which caused me to get denied which has caused me to end up in an appeal situation. This happened even after I walked them through every single document that needed to be submitted, then the person that screwed it up tried to blame it on ME and then tried to blame it on my advocate who gave her the information 7 times at least. I know this because I was BCC'd on the email that she sent to the person 7 of the times with the documents attached. I just wonder if anyone else has run into this.