Bought same gear with coins! I really need help!!!

I am so sorry to bother you guys that I bought 2 same Wrathful Gladiator's Scaled Chestpiece with my coins 5 days ago.. That was a terrible mistake and I hope there is a way to help me fix it. The new Wrathful Gladiator's Scaled Chestpiece, I put it in my bank. My account is from the Icecrown. I really need a help. Can you take the same gear back. Thank you very much!!

Item misbuys can be refunded through a support ticket but unfortunately only if made within 24 hours of the purchase.