Or just turn it Off and be done with it for once and for all, save you going through all the hag.
You obviously have experience of these matters
Yep, anything that involves the word BT never works on the first day and takes ages to be Commissioned.
I was one of the first in my area to get ISDN2 moons ago, bloodly thing was always going Out of Service, on one occasion I forgot to pay the Bill so BT cut me off, when I did get around to paying it and they reconnected me they couldn't get it to work at all (it had lost its route to the Exchange), took them months to fix it, digging up the whole Street to run new cables, didnt work, then digging half the Main Road, didnt work, then rerouting me to a diffent Exchange in the end.
When they did eventually get it going again, I found out I was into months of Compensation, which was a bonus but I told them didnt want the Service anymore, they had to send me a Cheque in the end for my Credit, well over 500 quid.
Ah the good old days.