Because you can only get them in person, I'm sure that there are at least some box seats left for the rest of the year- you didn't specify if you had a date in mind. Besides, even if you could call them, I'm sure they wouldn't be able to sell you the ticket over the phone anyway.
I am a firm believer in serendipity- all the random pieces coming together in one wonderful moment, when suddenly you see what their purpose was all along.