What was the source of the forms you mentined, what information is required, and to whom must you submit them. Can you post photos of the the blank forms?
Until Monday, when I recieved the November benefit payment on time (after the October SSA payment was dedayed from Friday the third until Tuesday the seventh, I was concerned that this was happening to me. If it had, I was going to go to the Banco Macro in Punta Alta and open an account to recieve my monthly Social Security benefits directly from the SSA and then make the appropriate changes with the SSA. If you have a DNI you should be able to do the same, without a lawyer. I am not sure if the change can be made online in your "My Social Security" account or if you will need help from the SBU.