Since upgrading I've been having a couple 30-seconds long disconnections every day. Zen delegates any responsibility to OpenReach, and the latter has sent an engineer [1] which hasn't found anything wrong _on my end_ (of course), so I have to pay them 165+VAT for the call. And the disconnections are still there.
It's perhaps not Zen's fault, but I went to the most stable Internet I've ever had to one that disconnects randomly, while being 200m away from the cabinet and no-one can tell me where the problem is. Fun.
1: the engineer actually did a thorough job to make sure my line was OK, so the problem is elsewhere.
