How to get the key in the bank in Brookhaven

@delta it was a brand new flight they put everyone on with the exact same number of seats as the previous plane. None of us were added to an existing flight. No other flights available with accessible seating (bc I was goin to a tiny tiny airport) for 3-4 days because they were booked up. My family paid almost 2k for the ticket in first class at full price.