I see you made four posts in a row, so I missed this part.
2) this feels like gaslighting, but I can confirm that I asked TEC to reconfirm the ate of 7th of July when I was first informed.
No it isn't gaslighting; how dare you suggest so.
It is a crucial question relevant to your position.
The debt could not have been registered on 7th July AND the OfR carry either an issue date or deadline date in September.
Somebody has made a mistake; I suggest you find out who ---- and asking again at the time doesn't cut the mustard. I've posed the question now because you need to check it.