It depends how important your phonecall is from National Security point of view. If its a matter of bribery or even kidnapping, nothing can be done, but if its

It depends how important your phonecall is from National Security point of view. If its a matter of bribery or even kidnapping, nothing can be done, but if its about some proven terrorist plot, ATT can recover your calls (so do probably all other vendors; we just don't know the details, aka black boxes) https://en.wikipedia.org/wiki/Room_641A https://en.wikipedia.org/wiki/Room_641A