Be patient, your complaints are in the queue, I know your feelings that you are very worried, but your problem does not only happen to yourself, but there are many poloniex users who experience similar problems.
If you did a withdrawal and never received the funds, they will be able to help you but If your account has been hacked and the money has been withdrawn without your knowledge, then Poloniex can't help you in that case.
Well, Poloniex is not responsible for any problems caused by user carelessness. I hope the OP doesn't experience anything like that.