Poloniex cheated me.
My ticket (#179080 1000 POT still missing) has not been resolved after 26 days :
"Around 3-4 weeks ago, I was withdrawing a couple of POT, each time around 1000 coins.
One such address was PG4DpFL1uaAeWPJcQtgLwN6p8jmpwfQJcx but the coins still have not arrived. The rest of the coins made it.
Can you help recover the 1000 POT?"
Multiple tickets opened but never resolved. Steer clear of Poloniex!!!!!