I accidentally buy the same music can I refund one of it?

Envato Customers Audio and Video
1

I just bought a set of musics.
But I accidentally put 2 of same music to cart.

And I just notice that after payment finished(But not download any of it yet.)
Can I cancel one of them?

2

If you haven’t downloaded yet, you should be eligible for a refund: http://audiojungle.net/refund_requests/new