[Thebear124]

I paid 400$ btc for a gtx card SE service but has since gone dark on the issue and with no refund or confirmation of delivery (despite saying it was shipped). Now I know he has posted something regarding being in trouble with the feds, but it was still advised that I post a scam report for potential future customers of his if he continues his work. So the facts are: currently -400$btc and nothing to show for it.  

Waiting for further information/refund.

You aren't the only one claiming to have wool pulled over their eyes in regards to this user. That's unfortunate.
If he's not returning messages, that's an obvious sign.
How long ago did you contact him and since has gone dark?