Phone order stolen

I went to upgrade my phone to a Samsung Galaxy S22 Ultra on 10/25 in store. The store did not have the phone so it needed to be ordered. I was reluctant to do this which is why I went in store to get the phone. I was told that the shipment was for next day delivery but it was actually 2nd day delivery - no big deal. However, on the 2nd day I stay home all day to receive the shipment since it required a signature. I keep an eye on the shipment's tracking online and at 5:13pm, I see that it has been delivered but I did not sign for it. I check my mailbox and around my house and neighbors and I cannot locate it. I don't normally have issues with stolen packages in my area and I believe that it was stolen by UPS. Reason I believe that is because it was marked as delivered to me and that I signed for it which is untrue. I've already reached out to UPS and filed a claim and I've contacted T-Mobile who said it's gong to take a few business days to look into. I'm not sure what else to do at this point and I'm afraid I might be out of the money I paid to upgrade the phone and the monthly fee I will be charged for the phone.