Thank you for your reply. I honestly think Polo is just keeping the funds for themselves. It's either that, or they have to manually have their customer support staff credit each user's account. And their customer support is basically non-existent.

There is a large STEEMIT post that is gaining steam (pun intended) where the original poster hasn't received his payment in over a month.

https://steemit.com/bitcoin/@liondani/red-flags-deposited-before-1-month-to-poloniex-usd2109-usdts-tether-and-still-not-there-had-you-similar-experience