“Request for Refund of Battlefield 4 Premium Pass - Purchased Today”

I bought the Battlefield 4 Premium Pass at around 6 PM today, mistakenly thinking it included the base game. After purchase, I realized it’s just a DLC that requires the standard game to run, which I don’t own. I have already requested a refund for the base game and would now like to cancel my Premium Pass purchase as well. My order number is 1006336421653 and I hope to process this refund as soon as possible. Thank you for your help.