it went off 5 times since i made that post. i just managed to run the online broadband check again, which failed and the automatic book an engineer screen actually popped up, so an engineer is booked for Wednesday morning.
if the engineer doesnt fix the problem, i shall try what you suggest.
Sorry to hear of the broadbadn issues since your installation, we appreciate you taking the time to raise this via the forums and welcome to the community.
I can see there is a visit booked in for today and from looking at the connection it looks to be power level issues on the downstream channels. I have noted the account just to let the technician know prior to the visit.