I'm not sure if you can go to a ground terminal and pick things up ?
It happens at my freight terminal every day.
It would boggle your mind how many people order things, and when we show up, have no way to unload it off our trailers.
If I can't manage it with a lift gate, it goes back, and many times the customer shows up with a truck or a trailer, and our dock guys use a forklift to load it up.
Many times, things come in for dock pick up.

Do you have the terminals number? If so, and called, what did they say ?