Sportscene decides to cancel my order!!!

I ordered two items online, one item was received and the other order was cancelled. When my order was placed there was no issues, but they now claim there was a "glitch in the system" . How can you just cancel my order? The problem was on your side not mine. This is ridiculous. I don't want a refund I want my item that i paid for. The purpose of black Friday is good deals, I am now expected to go in store a pay full price for an item.