Big surprise bill for hernia surgery

I had a hernia surgery 3 weeks ago. Prior to that i asked for a estimate to make sure i can afford it and they are in network. They also told me that they do prior authorize anyway.

Now 3 weeks later my insurance finalized the claim and saying it was out of network and i have to pay everything.

No i didnt checked myself if it is actually in network,i trusted the good faith estimate.

Is there anything i can do now? How could the surgery center be so wrong when they have all my information?

The Dr who did the surgery is in network, hes listed on my insurance app.

The insurance lists 5OH on the EOB which means that the surgery center didnt get prior authorization even if they said they did.

Is that now all my fault?