DC instantly after trade, lost the item and currency

So this guy naysummon whispers me to buy my shav for 6ex, he comes into my hideout, leaves party, we trade, i see my exalts in my inventory, and immediently after the trade i get a Abnormal disconnect: Game server lost contact with the realm. I never got that before. I log back in my shav is gone, my exalts are gone... idk what to do.