Me too, I've decided to migrate my voice line to Post Office (only 30 days contract & £40 cashback via Topcashback ) so the TTB broadband will be ceased altogether. TTB called me on Fri begging me to stay, I told the lady "sorry love, I've made up my mind" and she put notes on my account saying I was leaving d/t price rise so hopefully they won't hit me with early termination charges.
Since VOIP services have moved on, I've also ordered a new sipgate basic line with PAYG service to test it. If this proves to be reliable over the next few months, I'll migrate my PO number over to this, cancel the PO service and pay just £10 pm for unlimited calls to UK landlines and mobiles on sipgate.
Do explain what your future setup will be. I take it will be a PO land line with broadband service overlaid with a sipgate web based solution for your voice calls on a PAYG basis. So let's have a comparison against the increased charges from TTB, with mostly free calls, against your PO line rental with broadband overlaid with a Sipgate PAYG VoIP service, where there will be call charges..
The TTB increase of just a £1 exc VAT is indeed unwelcome but is it worth the effort to jump ship for such a small sum?
You can now have call packages from some VoIP providers for a monthly fee but remember that reliability of VoIP is only as good as your broadband service and can be as low as 97%..