Seller denying my request to cancel my order
So basically I bought an etb from a seller for my brother to open it on his birthday but like the next day I saw another etb 15€ cheaper (because it had a tear in the seal) and bought it and kindly asked the older seller to cancel the order but he refused saying I was trying to “manipulate the market” even though I explained him the situation and he still saying how I had 0 buy records on my account etc… I havent paid for the order yet but I sent the money through bank transfer for it to be accounted to my credits. He basically threatened me and told me to go f myself (not literally). I opened a support ticket but how long would it take them to solve the issue? Any ideas what can I do in this situation?