Changing Internet Service Provider (1: before the day)

I am currently with Plusnet, I have been with them since they took over Force9.  I have a website with them, that the children created - before they grew up and had families of their own.  It was for a while a hobby.  I'm not that concerned about the website, I have the source somewhere, and it's no longer relevant today.  Creating it taught me and, to some extent, my children, about the web. I also have email with Plusnet - that is important.  Although I have migrated most things away from that service, there are a number of things that are very difficult to change - and many that we have probably forgotten about.  As part of that, I have my own domain name - fisher-folk.co.uk.  It is used for the website and in lots of email addresses.

My current service is FTTC, with the analogue phone system also run by Plusnet. I would like to upgrade to "Full Fibre" (FTTP) to get better speeds, as we are now regularly streaming TV and would like to do it in more rooms.  We also have to retain the phone number as it is the only way that several of Jo's mum's friends can contact us.  Staying in touch is hard enough, without deliberately breaking the easiest form of communication.

Plusnet can offer FTTP, but not with a phone line, so a change will be required.

After a little research, I settled on Zen Internet.  They (OpenReach) will be coming tomorrow to install the new service.  

There have been several 'disconnects' along the way.  First, the installation date that I requested via Zen's website was effectively ignored. Zen told Plusnet it would be 8 Jan 2025, so Plusnet told me my service would end on 8 Jan.  OpenReach could not do the installation until 28th, so the date was changed and Zen told me of the new date.  Plusnet did not, but when I called them, after calling Zen, they were aware of the new date.  The lack of communication causes extra work for them and for me.  There is also reputational damage for Plusnet - I'm unlikely to change back to them in the future, after the phone service digital migration.

Getting my domain from Plusnet is also a struggle.  They do not seem to know what they are doing, and I certainly don't, it's my first try at changing the registrar of my domain.  The first request I made by phone was ignored, either by Plusnet or their service provider.  When I updated the ticket, a 'bot' closed it because customer input is no longer allowed.  How about taking the update link away? Surely that would make more sense?  I now have to wait 5 days and will lose 5 days or more of email as a result.

Since BT bought Plusnet, years ago, the service has degraded slowly; it seems that continues.

We'll see how tomorrow goes.