Sorry, I forgot to say I also have my old Ambit 256 modem here, from before I was given Superhub. IIRC it's not DOCSIS 3.
If I changed to 10mb and got them to activate it again? It always worked perfectly...
---------- Post added at 18:41 ---------- Previous post was at 17:27 ----------
Well, just got off the phone to a very helpful scottish man at VM.
He's downgraded me to the 10mb/s service, re-registered my old Ambit modem and we're good to go.
Just done some testing, and bearing in mine it's almost 7pm, they're a vast improvement over the super hub:
So, until VM have sorted the over-utilisation issue (I'll give them a call in a few weeks with the ticket reference to see if it's been completed) I'll make do with the 10mb connection. Fingers crossed it stays this way! lol
Thanks for all your help guys!