Speaking of which, I finally hit this nightmare scenario -- in one hand I have an international wire proof of payment from a customer, in the other hand I have my bank insisting that they never received a transfer. It's weeks later, I never shipped, and my customer says they never got the money back -- but they haven't been applying pressure to me, so if they are a scammer they are very bad at it. They also know an atypical amount of RF engineering for a scammer. At the moment it really does look to me like the banking system ate his money.
I sense a bit of Fear of God motivating your story, something that motivated your management to care -- who is that authority, so that I might get them on my case?