I guess that at the age of 75 I am too old to be a "Fanboy" but would like to report that I have, the best speeds ever.
Following advice on this forum,I phoned CS and asked for SRN to be set at 6db.This was done right away and my speed jumped from 2.5Mbps to 4Mbps and now averages about 3.6Mbps.
When I found that my voicemail was not working, a phone call resulted in it being working within 2 hours, as promised.
In both cases the phone calls were answered right away.
I am sure that the change over from Adsl24 has been more problematic than anticipated. I doubt COMS went out of their way to annoy customers.
If their changes result in heavy users moving to the likes of Plusnet,so be it.More bandwidth for the rest of us with moderate habits .