I mistakenly sent ETC from my hardware wallet to an ETH address on poloniex. I sent an email to Poloniex helpdesk and they sent me over here to resolve the issue. I've read online that people have made similar mistakes as me and have been able to recover there coins.
It actually appears that you may have emailed the Ethereum Foundation instead of Poloniex; Hudson Jameson is part of the Ethereum Foundation and not Poloniex.
Poloniex controls the private keys and, therefore, should be able credit your account the ETC to the amount that was sent to your ETH deposit address.