I am not saying that Bitmain is a scam, and considered their current strong position I wouldn't say so. In their defence, I say that bank transfers of all types can have delayed confirmation times.
Still, it is the best to reach their official help desk first then start a thread here where basically no one has access to their internal system and we can only speculate.
Well, I did try contacting their support and got blown off no less than 7 times now, and I tried opening a thread on their forum and posted the SWIFT and other transaction proof and got no replies as of yet. This is my first time doing business with a Chinese company of any kind so maybe this is the norm and I'm just not used to it (we are quite spoiled here in the U.S. in regards to customer service lol) but it isn't very comforting to have sent them a bitcoin and 1500+ USD in a wire transfer and get ignored like I'm a nobody. For most people that is a lot of money, myself included, and it is bad business to get cash from someone and just blow them off.
As for the bank transfer having delays....I bought into that until the 10th day (today is the 14th). I went to my bank and confirmed everything was legitimate and correct and then contacted bitmain again and got ignored once again. My bank is telling me to wait until Wednesday U.S. East coast time and if everything isn't resolved by then they said they would have a way of getting my wire transfer reversed (hopefully).
As for Mt.Gox, I think that is a different thing altogether, specifically because of Mark Karpeles and his involvement with Silk Road and organized crime. It isn't really fair to compare a mining operation like Bitmain to an international criminal / potential terrorist and his plot to get rich quick.
Mt. Gox is just exchange site and i think we don't need to compare them because its a different business even they are same japan based they are still different business bitmain is the only source of antminers and i think they are just out of stock or they are also affected of bitcoin banning in china. .