I understand that your team is working on this issue, but there are several problems with that.
First of all the this issue is from the 27th of November.
Secondly the DAI that was sent was when the DAI protocol split in SAI and Multi-Collateral DAI and your protocol was not updated, which means that the transaction went somewhere in a protocol which basically did not exist anymore on the Blockchain.
As we all know transactions on the Blockchain are irreversible and can not be changed, meaning that your team could not go back and change the transaction even if they were some technical gurus’ in blockchain technology and programming.
This leaves the only way to resolve this issue is by refunding this transaction since it was your job to either suspend Deposit/Withdrawals until your DAI protocol was updated (which took way too much time actually), so people don’t get missing funds. The process for a refund should not take more than 1-2 days, especially after I’ve sent you the Blockchain link for the transaction and you can confirm it was successful to the wallet address of my account.
I am starting to believe that those money are lost and I’ll never receive them, which does not speak good about the operations you are running, especially for a regulated financial service provider.