The Treasury Department takes money from federal payments to recoup money owed to other agencies. In doing so, they mail the offset notices to the affected person at the address provided by the agency to which they owe the debt. Often, the problems with debt collection arise from that agency not having the correct address for the person in the first place.
This causes the agency which issued the offset payment to spend unnecessary time trying to decipher why the payment is less, explaining it to the person, and then resending the letter to the correct address instead of the debtee agency being contacted originally. This wastes needless man hours.
The Treasury Department should get the correct address from the agency whose payment is being offset so as to minimize confusion.