Are you a local? If so, you can go to the box office and ask about a refund. Given it is the holiday week, they may grant you a refund as the tickets can be resold. If you're not local, don't bother calling Ticketmaster. BUT you can use Ticketmaster's resale feature.
good luck!
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle