Bit of a problem here: bought a ticket one hour ago and checked in. Now plans changed, and I want to use the 24 Hour Risk Free Cancellation. Flight leaves in one hour, so I suppose I need to do it before.

Tried online - doesn't work, tells me to call. I call - 1H30 wait time because apparently there is havoc in the North-East. I used Twitter account, but not sure they get to this in time.

I suppose the reason I cannot cancel online anymore is that I have already checked in.

What else could I try? In case I cannot get through to DL before the flight leaves - and this is after having tried several channels - what are the chances of getting my money back?

This is a First Class non-refundable ticket for a domestic itinerary.

Thanks