How does a provider reach a real person? I have a contracting dilemma and I need to speak to someone right away!!

I have a provider that  belongs to a group and was erroneously set up with an individual provider contract. We need to cancel her individual contract and re-enroll her under the group. This is virtually impossible to do if you cant get a real person on the phone to handle it. Can someone tell me how a provider is supposed to conduct business with a company who doesn't allow anything other than automated calls?

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