The iPad is Locked

I have both an iPod Touch 6g and iPad Air both of them are locked to a specific ID. Unfortunately, the person that was using these devices are gone and longer with the organization.  Each time I try to factory restore the devices it doesn't completely wipe the device and it comes back looking for the apple ID.

 I am holding down power + home button and I am getting the message to RESTORE or UPDATE.  It doesn't matter which I choose it doesn't completely wipe the device.

 Perhaps, I am not in DFU mode as I thought I am.