They couldn't have, because your region wouldn't have showed up on their target list for at least one update. When you initially establish the region, you have the ability to remove executive control from your delegate then, yet your left it enabled for four days. That is not in the process of configuring your region at the point any longer. According to the history log of your region, they tagged you four days after your founding, which is not immediately by any stretch.
The point being, if you leave executive power to your delegate, and aren't prepared to defend your region and get tagged, it is your own fault.