Aliexxpress

I ordered a guitar on may from Guitar of China store on AliExpress, they wrote me that to build the guitar required many time and asked me to not open dispute so after some time the order was automatically confirmed but I never received the guitar. So now I can't open dispute, not even leave feedback and Aliexpress (I have contacting them many time by mail and chat) DO NOTHING to help me about this fraud. The seller Guitar of China store stoled me 348$ without send me the guitar of course, because he know that I can do nothing to get back my money. Be carefoul because Aliexpress use a dangerous system, after some time the order result automatically confirmed and finished though You have received NOTHING! This is shameful and more shameful is that Aliexpress do nothing to protect the buyer, he protect just the seller even when the seller is a crook!