The EASY answer is that if you skip, the rest is cancelled. If you call, they reprice the enterir ticket at the CURRENT available seating/pricing.

The not so easy answer: it depends on the type of ticket, fare class, refund-ability, etc.

Remember, on the day you bought the ticket, you agreed to fly from A-B-C-D or whatever and they quoted a price for buying it that day.

You have TOTALLY changed the deal.

I think your deal and cost might have been reasonable.