Well, as of this afternoon/evening, things seem to be moving at the Greenby end - their ticketing system now no longer shows acres of white space and empty boxes, but now shows the details I logged, along with acres of verbiage and repetition from the AI bot. With some very tortured logic (anyone remember the Two Ronnies' Mastermind sketch, specialist subject - answering the question before the last one?). Nevertheless there's a human intervention on one of the tickets, which is encouraging, so I'll work at it with patience.
And will treat these as Greenby issues, not Plusnet ones. I'd half-expected Greenby to say something along the lines of "our systems are working as designed, we've just been fed garbage from the migration", as often happens. Glad that it's not the case here.
This forum has been immensely helpful over recent years, in particular a number of individuals who do a lot of heavy lifting, very much appreciated indeed. ISTR reading elsewhere a discussion on whether the email forum would be moved over to Greenby - is there any chance of this, or something similar happening?
