I too lost my long-loved landline number without warning when I migrated to digital - at BT's recommendation, because of the quality of the copper line. I agreed, on the strict condition that I keep my old number. (I'd had no end of trouble in summer 2021 when I moved over to BT; I lost the number then, and had to fight for a month to get it back. I am still in credit with the compensation from their mistakes and delays then.)
The digital order repeatedly cancelled their end, and migration was repeatedly delayed, but no one worked out why. (Or if they did, they didn't tell me.) Each time it cancelled I was asked to phone to 'resolve a query'; and each time, I reiterated that I needed to keep my old number. Mobile reception here is very poor so the landline is my main contact number for hundreds of contacts. My elderly dad has Alzheimer's and I am his next of kin/power of attorney for all his needs, agencies care providers and health contacts etc, too. But despite all the queries and phone calls, no one mentioned that I might lose the number.
I was eventually migrated - but no one thought to mention to me either in phone calls or email confirmations that I'd been given a new number. I discovered it by accident when phoning a friend - she said 'Where are you?' because it wasn't a number she recognised.
Now BT say that because it's a different exchange and an openreach number, I can't have my old number back. And they won't allow me to revert to the copper line. I've still had no written response to my complaints, just a cheery 'we've closed your complaint' - with no indication of their solution and no apology. Their emails don't permit responses; there is no complaints email address; phone calls are endless and useless, so I've written and mailed an old fashioned letter to the complaints section.
Still absolutely livid.
