Expedia Customer Service Not Responding About Finnair Record Locator

I booked a one-way Finnair flight from London to Pittsburgh through Expedia on March 9, 2026, under the name Laird Bergad. I have an Expedia confirmation/itinerary number 73392430667059, but I have not been able to obtain the airline record locator number for this booking, which I need in order to manage my flight directly with the airline and complete my travel arrangements. The flight is scheduled for July 8. Despite trying to reach customer service, it has been effectively impossible for me to contact Expedia and get this basic information. I am very frustrated that, although the ticket appears to be issued, I still do not have the corresponding airline record locator and cannot move forward with my plans. I request that Expedia urgently provide me with the correct Finnair record locator number for this booking, or otherwise clearly confirm the full status of my reservation so that I can access and manage my flight without further delay.