Problem activating new iPhone 13

My wife and I are getting exhausted while trying to activate her new iPhone 13. I was most recently talking to an agent from Advanced Support named Billy, and he was supposed to call me back today around 3 pm my time. He ended up calling around 4:30, and I missed the call because of bad reception at work. I am hoping to get connected to advanced support or Tier 3 support to solve this problem.

Here is a description of the problem:

We got the phone one week ago (9/13) and went through the activation process. It said that it should take 5-15 minutes. Nothing happened. The next evening, we called support. Since then, we have called support many times, each time waiting on hold for ~1 hour and then spending time on the phone explaining the problem from the beginning. It seems that initially the request to transfer the number did not go through. That request was canceled by an agent on the phone and we were told to wait 24 hours and then try the process again from the beginning. Nothing in our account online changed, but it seems that the request was canceled. We then went to the local store, where an agent helped us submit the request again (it was not possible to do it online). He said that the request had gone through, but when we checked the phone it was still not activated. He told us that it could take until 11pm that night. We waited and nothing happened.

We went back to the store, and he gave us a physical SIM card. He told us we would have to call support to get help installing and activating it. We called multiple times, getting different agents and spending additional time waiting on hold to wait for "advanced support".

Finally, I talked to Billy last night, who was very helpful, but still unable to solve the problem. We tried swapping to the physical SIM card, but he found that it was not allowed because the order was associated with an eSIM. He did see, however, that it looked like the activation was working. He said it might take until 11 pm. Again we waited and nothing happened. We had set up a time to talk today to try additional steps, but we did not connect.

Can I get a ticket to get connected to Tier 3 support or be put back in touch with Billy?

We are getting exhausted with the process and we are getting ready to return the phone.