Not very promising response,...
I sent the 2-wire box back Saturday, after looking at the phone wire signal with the box plugged in (it looks like an open circuit to me, floats at 60 Hz when I touch it, otherwise, looks like white noise).
And in response to my reason for returning the box and cancelling the service (my complaint that it never worked at all) I got a letter where they tried to sell me TV service again. No one even looked at what I said.
I am just not the customer they want.