[chrisbennet]

They had months to form a response. Instead they cut off communication.

[pavel_lishin]

To form a response to Upstart, yes - but not to form a response to this blog post. (Which, to be fair, as a PR company they should have known was coming, and should have had contingency planning to deal with this.)

[true_religion]

If you have no response, it's acceptable to write "We are deeply concerned about this situation regarding our former client, and will prepare a more comprehensive response to be publicized later".

[valuearb]

You’d have to be a PR agency to be able to write something like that quickly, er, wait...