There might be some confusion here.
He isnt asking for a uptime SLA, just for communication.
In my business I give outage information to people who pay a fraction of UK broadband costs, I also get this type of information even for £5 month VPS's I have leased.
Any network service company who is run sensible will log every single outage, regardless if its planned or unplanned, the issue is why this information is not available, it could be Openreach and other suppliers choosing to not pass it on or it could be IDNET do have the information but its just not accessible by the tech support team. Sadly the "race to the bottom" dumbing down of broadband is seemingly even affecting IDNET who I guess at one point were considered a premium broadband provider.
For reference I had a burst of PPP outages last December, multiple times a week, I queried it with AAISP who came back to me with the reason (talktalk business upgrade work).
Also an hour outage is quite a long time, I would definitely expect an explanation for that, very different to a simple PPP off/on cycle.